Sorry for the delay! I've been super busy with exams... bleh! But I hope it's worth the wait! :) Also if you have seen the Rizzoli and Isles Season 4 premiere then you may recognize a conversation; I tried to write it in exactly as it happened but I haven't seen it since it aired... so, please forgive me if it's not exactly word for word! It was just one of my favorite parts so I decided to add it in and have fun with it :)

Frankie opened his eyes against the early morning sunlight, pouring through Maura's living room windows. He slept on the couch last night, respecting Maura's wish for privacy while she sorts out her emotions with Ian's surprise visit the night before. He would never leave her side though, not completely. Frankie leaned his head back on the couch cushions and closed his eyes.

His past with Maura was irreplaceable, he felt. The ups and the downs they went through together could never match up to Ian; granted he didn't know exactly what Maura and Ian's past included. He remembered the jealousy he felt when she dated Dennis Rockmond; how he "arrested" her to break up their little date. The thought of the serial killer's arms around her made Frankie literally sick to his stomach. He knew Dr. Pike was also in love with the gorgeous doctor and he couldn't blame him. Jane told him that Maura was jealous when Teresa came back into his life with a little girl she claimed was his. Frankie cringed as he thought of being the father to a child that wasn't part Maura's too.

He thought back to all the times he, Jane, Maura, Frost and Korsak got together in the Dirty Robber to celebrate solving another case. They laughed, joked and told stories until closing when they were eventually kicked out. All the family dinners together, which always included Korsak and Frost and lately Cavanaugh had become a member of their little family get-togethers. He almost burst with happiness when his mother moved into Maura's guest house, he could finally be over at Maura's house with a new excuse: to see his mother. He grinned at that thought, thinking he was so clever.

But his smiled disappeared as he thought of all the bad times: he was in constant fear that one of Patty Doyle's enemies would find Maura. He heart clenched at all the times she had been attacked; When she and Tommy were held hostage in her own house. He half wished Dennis Rockmond had lived so he could kill the bastard himself. When they were stuck in the shootout, he had whispered to Jane to make sure nothing happened to Maura. Every time Maura went undercover, he prayed she made it out alright.

Yes, their past was definitely something to hold onto and fight for. And he was going to fight like hell if it came to that. 'He doesn't know her like I do.' Frankie told himself.

His thoughts were interrupted as Maura exited her room. Her sleepy bloodshot red eyes and mussed hair made it evident that she spent the night tossing and turning and Frankie immediately went to go make her coffee.

"Good morning." He said quietly, not sure if she was still wanting her space. But Maura wrapped her arms around him from behind, allowing her head to rest on his back, her fingers interlacing around his middle. She pressed a kiss to his shoulder, letting him know that she loved him. He turned in her arms to take her in his. Maura sighed and relaxed in his embrace, feeling his heart beating.

"I need to see Ian today." She whispered to him. Frankie froze and immediately felt his stomach drop. She was going to choose Ian... He looked down at her to see her looking up at him. "Please understand, Frankie. I was once in love with Ian. He was the man I was waiting for, until I decided that I was done waiting around for something that was never going to happen. He always chose the job over me. Every time I begged him to stay, he left. And I couldn't take it anymore. So I moved on and at first I didn't think I could move on. But I did. I fell in love with you. And it was one of those that took me a while to admit to myself. You were one of my best friends and Jane's little brother. But I fell in love anyways. You became the person I wanted to turn to when I was alone or scared or happy. I wanted you to be the person I could trust before anyone else. Frankie, you are the man who makes me so happy, who makes me feel safe and cherish. You look at me and my heart races and I could tell you scientific facts trying to explain this but it wouldn't make sense even to me. I can't explain the feelings I feel for you. Please trust me, I need to do this. I have to end this with Ian and give myself the closure. He was my past, but you are my future." She pleaded with her boyfriend. Frankie understood. When Teresa came back with Lily, and it turned out that she wasn't his daughter, he realized he needed to say goodbye to that chapter in his life. Maura just needed to say goodbye to this chapter in her life.

He kissed the tip of her nose. "Of course, sweetheart." He whispered as he kissed her gently, reminding himself that she was his. She still wanted him and the thought made his heart soar. He handed Maura her coffee and smiled as he watched her lovingly. "I love you." He told her as he smoothed her wild curls. Maura leaned into him and sipped her coffee. "I love you too Frankie."

Later that evening, the couple along with Jane sat in Maura's courtyard which separated her house from Angela's guest house working on Frankie's motorcycle. It was a beautiful evening for the "kids" to spend some quality time together. They broke the case and Maura had an opportunity to go talk to Ian. Frankie was relieved when she came back with the good news that the doctor was headed back to Africa. He smiled to himself as he watched Maura and Jane teased and joked with each other. He felt so blessed to have a wonderful sister and girlfriend who got along. They still hadn't told Jane or anyone else about them. As far as they knew, Angela was the only one who knew about their budding romance. And that was just how they liked it, till they were ready to tell everyone else.

"That motorcycle could make a beautiful café racer." Maura suggested as she looked over Frankie's bike. Jane almost spurt her beer out.

"He works in the drug unit, not the espresso unit, Maura." Jane retorted. Frankie held back a smirk.

"The Harley look is passé. 1960's British rockers are back!" Maura added with a grin. Frankie grinned back at her, unable to make fun of the adorable way she was getting all excited over this.

"Actually café racer could be a better cover. Can you get it to run?" he asked her. Maura bit on the inside of her lip, deciding to have some fun with Frankie.

"Well, before it sucks it into the combustion chamber," she paused to look up at Frankie suggestively, meeting the intense look he was giving her. She knew she had his attention and she licks her lips coyly before sauntering over to Jane who was watching the scene with amusement. She decided to play along.

"Go on." Jane purred, getting Maura back on focus. Operation-Make-Frankie-Nervous was in action.

"…violent explosion rams the piston down with great force." Maura continued. Frankie felt his pants tighten as he listened to his sweet Maura talk so dirty. 'Dear Lord, make her stop.' He pleaded silently, the last thing he needed was to get hard with his sister sitting right across from him. He bent his head and tried his very best to concentrate on his motorcycle parts.

"…long connecting rod forces the crank pin into rotation…which is what you want." She finally ended her torture with a heated suggestive look at Frankie, clearly enjoying watching the poor now-Detective struggle to keep his composure. He was itching to grab Maura around the waist and hoist her up on the table and have his way with her; her dirty talk turning him on more than he'd like to admit.

Jane was struggling too; struggling not to burst out laughing. "God, I would love to have my crank pin rotated right about now." She admitted before chugging her beer. Maura grinned and decided to have mercy on her boyfriend and stop torturing him. "I knew you'd miss him." She told Jane, meaning Casey.

Frankie decided to speak up. "Ok, you guys are really making me uncomfortable!" he protested as the girls just burst out laughing, unable to control it any longer. Frankie joined in until they were interrupted by the sound of Angela's voice.

"Oh stop it, you big lug! You wouldn't have-" she broke off as she spotted her kids all sitting outside. Lieutenant Cavanaugh trailed behind her carrying her bags of groceries. "Oh, hi. I didn't know you were all here." She added meekly, almost embarrassed to be bringing a man home, even though everyone knew Angela and Sean were dating.

"Hello." Sean said behind her. Jane, Frankie and Maura all answered back with their own hello's. Maura saved the poor Lieutenant the embarrassment and looked away but Jane and Frankie fixed the older adults with a well-practiced stare.

"We were just going to make dinner together." Angela explained. Sean looked from Jane to Frankie, "Hope you two don't mind." He added, asking for approval from his detectives to date their mother.

"No! Not at all!" they responded simultaneously. Maura ducked her head to hide her smile; she could tell they were both lying. "How nice…" Jane said, also trying not to throw up or laugh at the thought of her boss and her mother… no, not going there….

"Night!" Angela said quickly before entering the guest house with Sean behind her, leaving her kids standing in awkward silence. Jane was first to look over at Maura in absolute horror.

"Night? What the hell?!" Frankie and Maura couldn't hold it back anymore and they burst out laughing, Maura quickly trying to hide her laughter. "Shhhh! They can hear you!" she reprimanded.

"Good! I hope they can hear me. They shouldn't be doing what they're doing, whatever it is that they're planning to do." She wrinkled her nose.

"Ewww!" Frankie certainly did not want to think about his mom and his boss doing…anything.

"Frankie go in there!" Jane bossed him around.

"No! you go!" he shot back. Maura looked back and forth from the two siblings, shaking her head at them. She wished she had a sibling to fight with. But she and Jane interact like siblings. But the things she and Frankie have done were certainly not sibling-like. She smiled slightly as she thought of Frankie. Jane looked over to see her friend day-dreaming… Biting her cheek, Jane drained her beer and stood up.

"Well I certainly don't want to stick around to hear anything shenanigans coming from there." She said, pointing at the guest house, but leaving so Maura and Frankie could have some privacy. "Or out here…" she muttered under her breath. But Frankie was an expert at deciphering his sister's lingo and sarcasm and he heard her.

"Wait, you know about us?" he asked her. Maura's head shot up and panic flooded her face. Jane noticed this and quickly reassured her friend, playing it off like it was no big deal. "Yeah, duh! You two work around detectives all day… of course we know…" she told them. "But we're cool with it."

"Wait, you said we. Who else knows?" Maura said quickly.

"Frost and Korsak. And Cavanaugh might have mentioned that he and Ma walked in on you two in the kitchen the other night. Seriously, you two get a room!" she joked taking great pleasure at Frankie's look of embarrassment and Maura's look of confusion. "Get a room? But we were already home. Why would we go to a hotel and get a room?" she pondered. Frankie grinned and put his arm around her.

"She means if we're going to make out, we should do it behind closed doors." He explained as he watched the look of confusion go away as she understood what Jane was saying. Jane rolled her eyes at the couple.

"But none of that PDA! That's so gross!" she whined. Maura grinned and looked up at Frankie. "So the supply closet still counts right? It has a door and we weren't caught last time." She added seductively. Frankie grinned and leaned over to kiss her but was interrupted by the sound of Jane making gagging noises.

"Ok, I'm out of here. That's so nasty you two!" she said before throwing her beer bottle in the garbage and leaving the two love birds alone.

Maura was immediately swept up in Frankie's arms. She squealed very un-ladylike but she didn't care. When she was with Frankie she didn't have to be "Dr. Isles." She was just Maura.

"I thought she was never going to leave." He whispered against her mouth as he gripped her hips and hoisted her up onto the stone wall. Maura kissed him back, their mouths fused together, sparks flying.

"You were driving me crazy." She moaned. "I get very turned on watching you work, your muscular form is exquisite." She said as she ran her hands over his biceps. Frankie swelled with pride at her words but frowned. "I was driving you crazy? You were driving me crazy! Talking dirty like that, god Maura!" he groaned and grinded her hips against her, letting her feel what she did to him. Maura gasped and threw her head back. He left little kisses along the beautiful arch of her neck noticing the faint splatter of freckles, his hands roaming her petite body.

Maura opened her eyes and jumped down, grabbing his hand and pulling him toward her house. "I think we should get a room." She said suggestively as she reached down to run her hand over the front of his pants, her lips meeting his. He groaned his approval and tugged her towards the house, slamming the door behind them.

Across the street, two men sat in a car unseen by anyone. One flipped open his phone and dialed a number.

"Ok, they're in. Set off the bomb." He closed the phone and the car drove off. When they were two blocks away, they heard a deafening sound of a huge blast, a bomb going off in the night.