A/N: Lot's of little Klaine moments :). Also want to disclaim that I've never been the New York before, so a lot of this is vague research/guess work/imagination really. If you have better knowledge of New York City, I'm really sorry for any mistake I've made about it.

The minute Blaine stepped foot into the apartment, Kurt felt like a stranger in his own home. He suddenly felt like he didn't know where he was allowed to go, or what he was allowed to touch. The whole thing was too surreal for him. He barely heard Blaine praising the place as he gave him a quick tour, while the girls immediately went to Grace's room chattering and giggling away.

He showed Blaine the spare room, and left him alone for a moment, heading to the bathroom for a second of solitude. He just had to keep his head focused over the next few days. This was for the girls there was nothing more to it. He couldn't let his mind run away with fantasies of what could be, because it wasn't going to happen. Blaine was engaged. He'd well and truly moved on, and it wasn't his fault that Kurt never had quite.

He came out of his room to find Grace, Lydia and Blaine all sitting in the living room talking. He had to take a deep steadying breath before approaching them.

'So... since you're all only here for a short time I thought we would go out for dinner. And because we have our special guests, I thought I'd take you to Grace's and my favourite restaurant in the entire city. And believe me, we've eaten at enough different places to be able to make such a statement.'

The girl's high fived each other and Blaine smiled at him.

'What's the dress code?'

'Smart casual. We'll leave in about forty minutes.'

The restaurant was only a short walk away. Lydia and Grace took off ahead of Kurt and Blaine talking and giggling to each other.

'I wonder if they really are like that 24-7 or if it's because their plan worked.' Kurt wondered out loud.

'Twenty-four seven. If my inside sources are correct.' Blaine said.

'Inside sources?'

'Wes is a music teacher at Dalton.'

'Is he now?' Kurt asked. 'Interesting.'

'He only sees them a handful of times during the week. I'll admit though, I was angry when I found out he knew about them from their first day of the term and didn't think to tell me that Grace was, in fact, at Dalton.'

'Must be a little bit the way I felt when I found Dad had known from that weekend they switched.'

'He did?' Blaine asked surprised.

Kurt nodded. 'He overhead Lydia talking on the phone and worked it out. Didn't think to inform me until Thanksgiving when Lydia was standing at the front door.'

'Kurt, about then, I...'

'And here we have A Voce, the best Italian restaurant you'll ever go to. You have to try their ravioli; it is honestly to die for.' Kurt said, he pushed the door open and walked in ahead of Blaine.

'Pasta worth sacrificing your life for… must be good.'

Kurt turned to him with a smirk. 'Oh it is.'

Blaine was grateful the restaurants dim lighting hid the sudden flush that heated up his face.

'Oh good evening Mr Hummel, how are you tonight?' The host greeted him with a smile.

'I'm fantastic Julian. I don't suppose you have a table for four do you?'

'Four? Who's with you tonight?'

At that moment Grace and Lydia came and stood next to Kurt with identical smiles on their faces. Julian blinked at the several times, his eyes wide with surprise.

'There's two of her.' He said.

'Yes.' Kurt nodded. 'These are my two daughters, Grace and Lydia, we're here with their other father.'

He blinked again, trying to process the information, before putting a rehearsed smile back on his. 'Lovely. Table for four coming up then.'

'Thank you Julian.'

As they followed him through to the back of the restaurant Blaine snuck up behind him to whisper in his ear.

'You didn't tell me you were regulars.'

Kurt had to physically suppress the shiver that threatened to run down his spine as Blaine breath hit his ear. It was nothing. Blaine just didn't want to be overheard, plus the atmosphere was chattery, so he didn't want to have to yell over the top of the noise. They were seated at a table, Lydia and Grace quickly sat opposite each other, forcing Kurt and Blaine to do the same. Kurt had to take a deep breath. It wasn't just going to be a long night. It was going to be a long few days.

Dinner progressed and Blaine was feeling more and more relaxed about what the next few days were going to be like. He forgot that being around Kurt was easy. He'd been so caught up in all the emotions from fifteen years ago that had been long forgotten, so caught up in the hurt and anger he left behind in New York, that he forgot was it was like to be around Kurt. This version of Kurt. Kurt who wasn't trying to juggle a new marriage, new born babies and a demanding job. But Kurt who had bright eyes, a contagious smile and a wicked sense of humour. This Kurt was so easy to be around, so easy to laugh with and flirt to. There were so many moments during dinner where he had to check himself. He was engaged to Mason. He loved Mason. Kurt was… Kurt was his past, and he'd always have a deep affection for Kurt, because Kurt was the first boy he'd been in love Kurt. Kurt was his first real kiss, his first time, his first marriage, the father of his daughters… so of course Kurt would never be someone he felt nothing towards. But he couldn't get caught up in that. He couldn't be swept away by being in New York, with their daughters, without Mason. He couldn't let himself get re-addicted to the way he could make Kurt blush, or the way tingles shot through his body any time they accidentally brushed against each other, or touched. It was wrong.

'You were right.' Blaine said as the waiter took their demolished plated away. 'I would definitely sacrifice my life for that ravioli.'

'Told you it was good.' Kurt said.

'So,' one of the girls said, suddenly looking like she meant important business. 'We only have a few days, so we need to make them count. Dad B, when is Mason arriving?'

'Um, Christmas Eve.'

'Perfect.' The other twin said. 'Tomorrow we will be site seeing. One of us hasn't seen the city before. We'll do Times Square, Central Park and Top of the Rock, finished with ice skating at Bryant Park tomorrow night. Ok?'

Kurt glanced at Blaine to confirm Blaine was ok with this.

'Yeah, that sounds good girls.' He said.

'Excellent.' The first one to speak said. 'Then on Christmas Eve we're going to go shopping, be a part of the crazy… maybe Dad K can make some sales assistants cry.'

'We'll see.' Kurt said.

'Followed with a cosy evening at home watching Christmas Carols on TV and decorating the tree. I believe Aunt Rach is going to be joining that night and sleeping over so she can be with us all on Christmas morning.'

'That uh… that's quite a detailed plan.' Blaine said.

'Yes, well, if we'd had Christmas together every year we'd probably have a whole heap of family traditions to participate in. But that didn't happen, so we have no traditions.'

'Girls… are you…'

'What? Are we what?'

'Ever going to forgive us?'

The twins looked at each other and shrugged. 'Maybe one day.'

'But for now,' the other spoke up. 'We have a busy day tomorrow so we should get home.'

'Can we get frozen yoghurt on the way home?'

'Yes. I think we can manage that. Right, I'll go get the bill, I'll meet you outside.'

The girls stood up, and walked out of the restaurant. Blaine stayed behind and followed Kurt, fishing out his wallet. Their waiter was printing out their bill for them when Kurt spun around to face Blaine, who hadn't realised how close he'd been standing to Kurt. They were almost touching.

'What are you doing?' Kurt asked.

'I um…' Blaine swallowed, completely captivated all of a sudden by Kurt's eyes.

They seemed to have more green in them than he remembered. Were they greener? Or had he just forgotten what Kurt's eyes looked like? How could he forget something like that? 'I'm paying our share of the bill.'

'No you're not.' Kurt said. 'My city, I pay. Go away.'

'Um… ok.' He took a step back.

Kurt seemed to realise the way his tone had come across instantly, because he face softened. 'Blaine, I didn't mean… I just meant… go and wait outside with the girls. I'm more than happy to pay for this ok? Besides… I happen to know the owner, I get a discount.'

'At least let me tip.' Blaine insisted, pulling some notes from his wallet.

'Fine.' Kurt rolled his eyes almost playfully. 'You can pay the tip. I'll meet you outside.'

'You guys look happy together, I want that one day.' The waiter said once Blaine had walked away.

'Oh we're not…' Kurt started, immediately flustered. 'I… thanks.' He took his credit card back and slipped it into his wallet before walking outside and meeting the girls and Blaine, who smiled at him warmly. Kurt ignored the way his heart fluttered, for the thousandth time that night.

He needed to get a grip.

x x x

'Did you see them at dinner?' Grace asked, as soon as they were back at the apartment, they took off to Grace's room.

'I thought my Dad was going to lunge across the table and attack Kurt with his mouth.' Lydia said. 'Which you'd think I'd find really gross, but oddly, I was ok with it.'

'Seriously… they were eyeing each other up like nothing else the entire meal. My Dad is pale, so he gets red pretty easily, but I have never seen him blush that much, or that constantly, ever.'

'You know what I don't understand,' Lydia said, kicking off her heels and lying back on the bed, with her legs dangling over the edge. 'Is how love that so obviously destined to be can fall apart? I mean, I reckon everyone in that restaurant could see how much the belong together, and the way they're drawn to each other like magnets or something… but not even that could keep them together.'

Grace shrugged, joining her sister on the bed. 'I don't know. Other people make it work, like my grandparents for example. I think they were just young, and stupid. This time around they're older, they're more mature… there's still hope.'

'Except for the stupid engagement.'

'Hey, engagements can be broken off. It's just a speed hump.'

'I hope you're right.'

x x x

After Grace and Lydia basically made a beeline for Grace's room Kurt and Blaine were left alone, standing awkwardly in the living room, both unsure of how to navigate the situation.

'Um,' Kurt said. 'I actually have a bit of work left still to do, so… I was going to um,'

'Oh right, yeah, of course.' Blaine said.

'Cool, well… there's the TV, feel free to watch it, or get anything from the kitchen or… I don't really know. Make yourself at home, I guess.'

Blaine nodded.

Kurt stared at him a moment longer, before nodding back. 'Ok.'

He turned, and walked into his workroom. He didn't shut the door all the way close, but once he was in the sanctuary of his own company he let out a deep shuddering breath and ran his fingers through his hair. The next few days were going to be a nightmare. The whole time through dinner Blaine had looked perfect, with his hair out in curls and slight stubble along his jaw. And he'd kept looking at him. Looking at him the way he had back when they were teenagers. With that awe and wonder and innocence (and then occasionally he'd be eating and would look up suddenly at Kurt with his gaze so… heated) and Kurt hadn't been able to handle it. He wondered if Blaine knew he was doing it. Actually, he wondered if Blaine even actually was doing it, or if he'd made the whole thing up in his head.

He probably had.

Blaine was… wasn't… Blaine had moved on. He was engaged. He had a fiancé. Kurt needed to remind himself, he wasn't still in love with Blaine. He couldn't be. It was just a little crush. That was all.

There was a knock on the door.

'Yeah?' He asked. He was expected to see one, or both of the girls. Not Blaine. 'Oh… Blaine. Hi.'

'Hi.' Blaine said, ducking his head, almost shyly.

'Did you need help with something?' Kurt asked.

'No.' He shook his head.

'Ok…'

'I wanted to see your work.' He said.

'Oh.' Kurt's eyebrows shot up. 'You do?'

'Yeah. You're doing what you've always wanted to do, so… what are you working on right now?'

'Um… well, the collections are done at the studio. But I work on customs here. And uh… well, awards season is coming up, so I'm working on a custom dress for a client attending the Grammy's. I also will be doing one for the Oscars, but I'm still working with the client on specifics.' He walked over to the mannequin and turned it around for Blaine to see the dress.

'Wow.' Blaine stared at the dress. 'Kurt… it's stunning.'

'Thank you.' He said softly.

'No, really. Wow.' Blaine stepped forward to get a closer look at the detail work.

'You're… this is amazing.' He looked up at Kurt, their eyes locking. 'You're amazing.'

'It's nice to hear every now and then.'

He was so close. It wouldn't take much for Kurt to reach out and stroke his cheek, feel the graze of stubble under the pad of his thumb. It wouldn't take much at all.

Blaine wasn't his.

Kurt took a step back, and tore his eyes away, focusing on the fabric right in front of him.

'I have to focus.' He said. 'I'm not going to get much done over the next few days with you all here, so I need the time. I've got Netflix. Feel free to watch what you want.'

'Right. Of course. I might head off to bed anyway. I'll see you in the morning.'

'Yeah.' Kurt didn't look up until her heard the door click shut.

He let out a heavy sigh. This was too hard. Way, way too hard.

x x x

Kurt wasn't too sure what had made him wake up at first. And then he became conscious of the smell of pancakes cooking wafting into his room. His stomach rumbled in anticipation immediately.

Before he headed out to the kitchen, he vainly checked his reflection. He looked appropriately tousled… he knew that it was extremely inappropriate to use the fact that Blaine liked the way he looked most when he'd just woken up. But… he only had a little over 24 hours left with Blaine before his fiancé arrived and… he'd never actually do anything. Blaine was a taken man and that was a boundary he wouldn't ever cross. But, knowing, even for just a second, that Blaine still found him attractive would be enough.

He walked out and saw the girls standing over the stove and Blaine sitting on one of the stools at the bench, nursing a mug of coffee.

'Good morning.' He greeted, manoeuvring around the kitchen, getting his own coffee. 'That smells great girls.'

'Thank you. I'm teaching Lydia our secret recipe.'

Kurt turned his head so quickly he almost got whiplash. 'Lydia huh?'

'Yep.' Grace nodded. 'Gigs up. We decided the threat of Blaine forcing Lydia back to Ohio for Christmas now was over. And it's annoying for us when you both just call us 'hey you'. So… tada.'

'How come I'm made out to be the bad guy?' Blaine asked.

'Because every story needs a villain and you are an easy target. Who knows, maybe next month Kurt will be the bad guy.' Lydia said.

Kurt, took his coffee and went and sat on the stool next to Blaine nudging him playfully.

'Tough luck Anderson.' He said grinning.

Blaine rolled his eyes. 'I'll have you know, I'm not above buying their love.'

'And don't we plan on abusing it.' Lydia said, placing a plate of pancakes in front of Blaine and another for Kurt.

'I'm a little afraid as to what we've gotten ourselves into.' Kurt said quietly to Blaine as the girls resumed making pancakes now for themselves to eat.

'Well, whatever it is… can't say we didn't earn it.'

Kurt simply nodded.

'By the way,' Blaine leant over, invading Kurt's personal space ever so slightly. 'I forgot how good you look in a hoodie.'

Kurt felt himself flush hotly as Blaine leant back out of his personal space and resumed eating pancakes as though nothing had happened.

x x x

Undoubtedly one of the most beautiful things Blaine got to witness was the wide-eyed wonder his daughter displayed so openly on her face as they toured their way through New York City.

They started in Central Park, since it was literally outside the door of Kurt's apartment building. Lydia and Grace walked constantly ahead of them, Grace sharing stories of her childhood with Lydia, pointing out where she'd first fallen off her bike, where a boy she knew had pushed her over and she'd broken her wrist, where her favourite 'thinking spots' where. Blaine could see the awe on Lydia's face as she took in the park, but also the moments of far-off curiosity. He suspected she was thinking about what her life could have been, growing up in the city the way Grace had, with Grace by her side.

Blaine had tried. He tried to give Lydia the most fulfilling upbringing he could. He'd barely denied her anything… which in hindsight probably wasn't great parenting especially given the attitude Lydia had developed, but the guilt had always eaten away at him. Anytime Lydia had wanted something, she'd look up at him, with bright blue, pleading eyes and instantly he'd picture and identical girl next to her and a guilt Lydia didn't even know she could use against him won out every time and he caved. In some ways he'd hoped giving her everything she could possibly want would make up for the mistakes he and Kurt had made.

According to Lydia and Grace's plans the Rockefeller Centre was next. The line to get to the top was long and Blaine spent the time in line watching Kurt interact with the girls. Kurt had such an ease with them Blaine had yet to manage.

'Dad?' Lydia looked over at him, and reached out; pulling him into the little circle they'd created. 'Want to tell us about your first time coming here?'

Blaine shot Kurt a playful glare. 'You're mean.' He said.

Kurt gave him a cheeky smirk. 'Are you going to tell them the story? Or do you want me to?'

'No! I will. I'll tell them.' Blaine said hurriedly. He knew the version of the story that would get told if Kurt told them. 'It was my freshman year of college, I was a couple of weeks in and it occurred to us that I hadn't really seen the city properly. So, Kurt decided to take me out one day and do all the clichéd tourist things.'

Kurt had insisted that the two of them go to the top of the Rock, rather than the Empire State Building, giving the reasons that lines for the Empire State Building were insane, and at the top of the Rock, you could see the Empire State Building and that was a more spectacular view.

Blaine was buzzing with excitement as the elevator went up, and up, and up. They finally stepped out on to the roof of the building.

'Wow.' He breathed as the view came into his line of sight.

Beside him Kurt grinned, gripping his arm tight. 'Take it all in.' Kurt said.

'I am.' Blaine said, moving closer to the glass panels surrounding the edge. He slowly walked around, taking everything in as slowly as he could, not wanting to miss a moment.

It was probably around fifteen or twenty minutes later, when he realised Kurt was missing. He finally found him, just a couple of meters away. Blaine grinned, and slowly approached him from behind. He stealthily wrapped his arms around Kurt's waist.

'Hey you,' He said, spinning Kurt around in his arms and leaning in for a kiss. 'Ahh! You're not who I thought you were.'

There was a strange man staring at him with a terrified look on his face. The man shook his head. 'No, I-I don't think I am.'

'Sorry.'

'You might want to let go of me now.'

Blaine glanced down to see the way his arms were wrapped around the strange man's waist. 'I am so sorry.'

'Yeah, so you said.' The man pulled himself away from Blaine, who let his arms flop ungraciously to his side, and walked away.

Blaine stood there, not too sure what to do, beet red, hoping no one else had witness the exchange. He did a slow casual glance around, only to find Kurt standing just behind him, gripping his sides laughing.

'Shut up.' Blaine said.

'I am so glad I got to witness that. That was great.'

'You groped a stranger?' Lydia asked.

'I didn't grope him!' Blaine exclaimed.

Kurt rolled his eyes. 'Your hands were so close to his butt that you might as well have been.'

'But I didn't.'

'You groped a stranger.' Lydia sang, nudging her father a little.

'This is your fault.' Blaine playfully glared at Kurt.

'Ah, well, you'll just have to get me back later.'

'I'm already plotting it out in my head.'

x x x

'We have one more thing planned.' Lydia said as they walked out of the restaurant they'd chosen for dinner.

Kurt and Blaine exchanged a sceptical glance.

'And what is that?' Blaine asked.

'You'll see.' Grace said, leading the four of them down the road to Bryant Park.

When they got there, the ice rink was being shut down for the night. Kurt admittedly felt a little disappointed that it was closing early for the night and they wouldn't get to skate. For a little while it had been a tradition of theirs. Since that first Christmas, while they were broken up, for the first time, and Blaine had come to New York with his dad, they'd started to do it every year. And it'd be nice to participate in the tradition, just one last time, years after it was long over.

'Grace!' A teenage girl emerged through the crowd of people, embracing Grace in a hug.

'Shannon! I missed you so much!' Grace squealed.

The girl, Shannon, grinned. 'Is this Lydia?' She asked.

'It is. Lydia, this is Shannon, the one who was able to organise all of this.'

'Hey.' Lydia said.

'Organise what?' Blaine asked Kurt quietly.

Kurt shrugged.

'Hello Mr Hummel,' Shannon said before looking to Blaine. 'You must be Blaine then I assume. I'm Shannon.'

'Nice to meet you Shannon.'

'Back at you. Well, if the four of you would follow me please.'

Kurt and Blaine exchanged another confused look.

'What's going on Grace?' Kurt asked.

'We're going ice skating.' Grace said.

'But the rink's closed.'

'Yeah, closed for us.'

'What?'

Before he could get an answer they were lead to the skate hire, where Shannon took a place behind the desk and smiled brightly. 'What size are you?' She asked.

Lydia and Grace grabbed their skates, and then ushered Kurt and Blaine towards the counter to get their own.

Ten minutes later all four of them were on the ice. Lydia and Grace immediately skated over to the other side of the rink, away from Kurt and Blaine who both needed several moments to get used to the feeling. Their bodies weren't as young as they had once been.

'I haven't actually been ice skating since…' Kurt stopped his sentence short. Unsure of whether or not somehow that was crossing a boundary.

'Neither have I.' Blaine said.

Kurt glanced over to their daughters who were skating in a small circle talking.

'I have an idea.' He said.

'Ok…' Blaine went to move a little closer so Kurt could tell him, but he misjudged his centre of balance entirely and in almost slow motion felt himself begin to fall. He grabbed the closest thing to him, which happened to be Kurt, and the two of them went toppling down on the ice.

'Ow.' Kurt groaned, his body lying sideways across Blaine's. 'The ice is cold.' He had been wearing fingerless gloves and his hands hand landed firmly on the ice, the cold seeping in quickly.

'No kidding.' Blaine said, breathless from the blow. 'I think I just did permanent back damage.'

'Oh my God, are you ok?' Kurt propped himself up, taking as much of his body weight off Blaine as he could to look at the man.

'Just slowly going numb.'

'Ok, just… I'll get up and then help you.' It took him several attempts to find the right balance to get himself back onto two feet. By the time he had, Blaine was sitting up watching him in slight amusement. 'Yeah whatever, laugh away Anderson.' He grumbled, offering his hand out for Blaine to grip and pull himself up on. 'Are you sure you're ok?'

'I was only slightly kidding about the back.' Blaine said. 'Aside from the giant wet patch on my ass, I'm ok.'

Kurt laughed. 'That's what you get for being uncoordinated.'

'Hey, I used to be better at skating than you.'

'Age has caught up to you m'dear.'

Blaine paused for a second. Kurt blushed.

'I uh… sorry. I didn't mean, it just slipped out.'

'Don't sweat it.' Blaine said, but even he could hear the strain in his own voice.

Across the other side of the rink, Lydia and Grace were huddled, watching their fathers.

'Ugh, they make me want to puke.' Lydia groaned. 'So stupidly adorable and they can't even see it.'

'Well, if you're going to throw up, turn your head, because I don't it all over me.'

'I wish Mason wasn't coming tomorrow.'

'Maybe really deep down he is a good person, and on Christmas day he'll see what he's keeping apart and leave quietly.'

'Yeah, maybe really, really deep down. And only maybe. Besides, we just need to get Dad to see that Mason is a terrible person so he'll leave. He'll be heartbroken if Mason leaves him, but if he leaves Mason…' Lydia trailed off.

'Right, so, enter phase two?' Grace asked.

'Yeah…' Lydia said absently.

Grace followed her sister gaze over to her Dad and Blaine and grinned.

'There's another tradition that I feel like we could bring back for one night only.' Blaine said with a grin, having now found his footing and skating around Kurt.

'Oh? And what is that?' Kurt asked.

'Rocking around the Christmas tree, at the Christmas part hop.' Blaine started singing softly.

Kurt rolled his eyes playfully. 'Our Christmas duet?' He asked.

Blaine nodded. 'Mistletoe hung where you can see, every couple tries to stop.'

'Rocking around the Christmas tree, let the Christmas spirit ring.' Kurt joined in, Blaine grin widened and the two of them started belting out the song, skating their way around the rink, and skating circles around their daughters trying to entice them to join in.

Eventually both girls did, laughing and rolling their eyes at their fathers' silly antics until the song came to a dramatic end and all of them ended the song laughing. And for a short moment in time, the four of them felt like the one family.