Fic title: Surprise, Stiles!

Summary: Lydia throws Stiles a surprise party and with the help of their friends it goes off without a hitch.

Rating: T

Genre: Future, fluff

Author: stileslydiamartinstilinski (Tumblr)

Note: Wrote this story for stydiaweek on Tumblr. I'm thinking about doing a second part to this (if you would like to see a second part, let me know). Also I write 'The Collection' here on , but I haven't updated in a while, fear not I haven't forgotten about it. I will totally be updating it as soon as I can which unfortunately probably won't be until the beginning of May due to essays and finals coming up. So just be patient and it will be updated soon, and once its summer I will hopefully be updating a lot more (last summer I updated about once a week). So anyways enjoy this story and tell me what you think. Follow me on Tumblr is you like Teen Wolf/Stydia.

"Allison did you put the cake in the oven yet because you know it needs time to cool before we put the icing on, right?" Lydia asked as she crossed the threshold from the dining room into the kitchen where Allison was preparing a variety of appetizers.

"Yes, it's already cooling. Remember we took it out half an hour ago." Allison said, reminding her friend in a soothing tone in an attempt to calm her down slightly.

"Right, sorry. I guess I forgot."

"It's alright. You just need to take a deep breath and chill out. Everything will be fine."

"Allison, I don't want this party to be fine I want it to be perfect." She said as she began to busy herself by aiding Allison in cutting up fruit for the large fruit tray they were making.

"Lydia, stop stressing out, I'm sure everything will go on without a hitch." Allison encouraged as she cautiously grabbed Lydia's wrist in order to get her full attention. "Just relax, this isn't your wedding. Now that was a stressful day." The brunette said remembering the day that Stiles and Lydia got married, no more than two years ago.

"And if you remember that day was perfect, thanks to all of my planning and careful instructions." Lydia replied as she carefully cut the strawberries.

"I think 'bitching' would be a more proper term to use." Allison said laughing, and she was met with an amicable glare from her best friend. "What? It is kind of true?"

"Hey it was my special day and that's all that matters. As long as I was happy with the outcome then that I don't care how much of a bitch I was."

"I'm pretty sure you instilled fear in Stiles' cousin." She said raising an eyebrow as she recalled Lydia raising her tone with the seven year old when she wouldn't behave as the bridesmaids were having their hair and make-up done.

"Hey she was on her best behavior after that. You can't say I don't get results."

"I suppose that's true." Allison considered as a whine echoed from the living room and into the kitchen where the two women were standing.

"Speaking of children, I think your son just woke up." Lydia said as Allison went into the upstairs guest room of Stiles and Lydia's home where a temporary pack and play was set up, returning with a baby in her arms.

"Here hold him for a minute; it will help you relax for a minute." Allison said handing Lydia the baby, Connor, without much consent.

"I can't believe how big he is already. I feel like you just had him." Lydia commented as she bounced the eight month old baby on her hip.

"I know I can't believe it either. And he acts like Scott more and more every day. It's sort of terrifying." Allison said as she finished cutting up the last of the fruit.

"I would guess." Lydia said smiling at the baby.

"He really is a good baby, just a bit hyperactive at times." Allison said smiling.

"Mhm, well he's always good for his Aunt Lydia." She said kissing him on the nose, causing him to smile.

"Okay so what's next?" Allison asked after she put the fruit tray into the fridge.

"Um I'm think we need to put icing on the cake, cut up the veggies, and make sure all of the drinks and dips are ready to go when everyone gets here. Oh my god and I have to make sure everything is set up outside. And I still have to get ready!" Lydia said as she went over her mental check list and suddenly remembered she was currently in yoga shorts and a tee shirt, face free of make-up and hair up in a ponytail.

"It's okay, just try to relax. Isaac, Kira, and the Sheriff should be here any minute to help set up." She said taking her son from Lydia.

"But I forgot to get balloons at the store."

"Hey don't worry, I already texted Kira and she said she would pick some up on her way over here."

"What if this all for nothing? What if he doesn't even want a party? Or what if he's already figured out what's going on?"

"I'm sure Stiles hasn't figured out that you're throwing him a surprise party. Scott usually goes out to lunch with him or hangs out with him on his birthday. I'm sure he doesn't suspect anything." Allison said trying to reassure her friend.

"You're right. I just love him so much and he does so much for me, I just want him to know how much I care."

"Lydia he loves you a lot already I think he's just glad you agreed to marry him." Allison joked causing Lydia to huff slightly and she was about to retort when the doorbell rang.

"Mmm, looks like you were saved by the bell." Lydia said as she walked to the front of her house and opened the front door. Outside stood Kira and Isaac, Lydia presumed a lot of balloons were floating in front of his face. "Hey guys come on in." She said opening the door wider and stepping to the side so that the two could enter. "Thank you guys so much for coming early to set up." She said as the three of them walked into the kitchen.

"No problem, happy to help." Isaac smiled.

"And Kira thank you so much for bringing the balloons, I was about to have an aneurism."

"Oh don't worry it was on the way." Kira said smiling widely. "What do you need us to do?" The raven haired woman asked.

"Okay Kira, you can help Allison and I finish up the food. Isaac can you start moving the outdoor furniture from the corner of the garage? Stiles' dad should be here any minute and he can help you, and then afterwards we'll need to decorate out here too."

"Yeah, I'll go do that now." He said heading outside through the sliding glass door to begin arranging the furniture.

Allison put Connor in the portable high chair and let him play with a few small toys while the three females finished with the food and drink preparation when the doorbell rang again.

"Lydia! Hey how's my favorite daughter-in-law?" Sheriff Stilinski asked as Lydia opened the door and let him inside to her house right before he enveloped her in a side hug, due to the fact that he was holding a present for Stiles in one arm.

"I'm good, a little stressed out right now but overall pretty good." She smiled at him as she pulled away from the hug.

"I'm sure it will all go fine. Where do you want me to put this?" He asked, gesturing to the present.

"Oh in the dining room on the table is fine." She informed him as they dropped the gift off in the dining room before heading into the kitchen.

"Allison, Kira." He greeted them with a wave.

"Hi Sheriff." They replied in a bit out of sync unison.

"Alright what do you need me to do? Put me to work." He said clapping his hands together, ready to help wherever he was needed.

"I think Isaac started to move some furniture out of the garage and into the backyard. And when you guys get finished with that you can start decorating that is if you don't mind."

"No not at all, I'll go help him then." He said walking outside to join Isaac.

"Lydia I can tell you're stressing still. Why don't you go upstairs and start to get ready, I know that calms you down. Then when everyone gets here you'll be ready to go." Allison urged her best friend to get changed and to do her hair and make-up.

"We still have stuff to do though." Lydia argued.

"Lydia, Allison and I have it covered. Don't worry, go and try to relax." Kira responded before Allison had the chance to.

"Are you sure?"

"Yes we're sure now go and get ready before we change our minds." Allison told her friend before waving her off so she would get moving.

Lydia wandered up the stairs and into the large master bedroom she shared with Stiles. The bed was still unmade from earlier with the comforter and pillows strewn about. She giggled remembering how hard it had been to get him out of bed and out of the house earlier. He had almost flat out refused to go out to brunch and a few hours at the batting cages and go karts so that he could spend his twenty-fifth birthday in bed with Lydia. She appreciated that she was that important to him that all he wanted was to spend time with her but he had almost ruined the whole plan for the day so she had no other choice but to kick him out of bed after a brief morning quickie of course, it was his birthday after all.

This party was all her idea in order to show him how much she truly loved, cherished, and appreciated him. He always did everything he could to make her birthday as special and fun as he could; now it was her turn. And she couldn't help but think about how much she loved him as she walked past the many pictures of the two of them from weddings, parties, vacations, and all other sorts of occasions. She absolutely loved that they both looked genuinely happy in all of the photos, it was something she hadn't been used to until she met him. She loved her life with him, more than she would have ever imagined.

Lydia walked to her side of the bed first and checked the top drawer of her nightstand to make sure that his gift from her was in the same spot and un-tampered with. When she looked inside she found it just where she had left it. Pleased she shut the drawer and sauntered into the master bath, stripping off the outfit she had thrown on after Stiles had left with Scott and putting it in the hamper, un-tying her hair from the ponytail and began to run the water for the shower.

She tried to de-stress as best as possible as she felt the hot water loosen her muscles. She let her mind drift from the stress of party planning to the reaction she would get from Stiles and she decided it would all be worth it. Lydia couldn't wait to see his face reacting to not only the party but also the gift she had planned on giving him later. After shaving, washing, and conditioning her she turned off the water and stepped out of the shower feeling rejuvenated and sighed with content as she wrapped her bath robe around her body. She sauntered out of the bathroom and through the bedroom to the shared walk in closet that was really more like Lydia's walk in closet with a few of Stiles clothing items that were deemed worthy of being hung up. She shimmied into a pair of lacy blue underwear with a matching strapless bra and put on the blue, summery, spaghetti strap dress she had bought months in advance. Once she was dressed she slipped on her nude heels and walked back to the bathroom so that she could dry and style her hair and put make up on. When she had perfected her look she headed back downstairs to help finish with the decorating and food prep.

"Lydia, I think your phone is ringing." Kira said as Allison was icing the cake and Kira and Lydia were hanging the last of the streamers in the kitchen.

"Hey babe." Lydia said as she answered the phone seeing that it was Stiles who was calling.

"Hey Lydia, don't worry or be mad because Scott said we're going somewhere else and it's a surprise and I'm so sorry."

"Stiles I'm not mad, don't worry. Have fun with Scott." She grinned into the speaker.

"Yeah but I really just wish I was back home with you right now. If we don't get back soon we might not make it to dinner." He rambled and she could hear the annoyance in his voice, normally his birthday outings with Scott never lasted this long and they hadn't been on the day of his birthday since he had been married to Lydia.

"Calm down, it's alright. We can always go tomorrow." It was probably throwing him for a loop at how cooperative she was being.

"No seriously if you want me to come back just tell me and I'll make Scott bring me home." He encouraged, getting desperate on realizing she wasn't freaking out.

"Sweetheart, it is completely fine. I'll live. We'll just have an extra day to celebrate it." She said biting her lip to keep herself from laughing into the phone and giving herself away.

"Lydia, baby, please just call Scott to bring me home, he's basically my brother and I love him and everything but I really just want to spend my birthday with you!" He complained a little louder now, he was clearly very frustrated.

"Stiles listen, he could only hang out today with you. Think about how many times he was the only friend you had to spend your birthday with. Don't take it for granted, you guys are getting old and busier you're not always going to get to hang out 24/7 like you did in high school. So just take a deep breath and enjoy the day. And I promise you that we can celebrate when you get home and all day tomorrow, if you're catching my drift." She scolded him at first but then softened up a bit at the end of her speech.

"Wait like all day long tomorrow?" He said in a hushed tone, obviously fully understanding what she was saying.

"Mhm, all day, as many times as you want…" she smirked at the fact that she still had him completely wrapped when she wanted him to be, and he really didn't mind at all "but only if you're good and you let Scott take you wherever he wants to take you."

"Mmmm fine." He said finally.

"Sounds good. I'll see you later. I love you birthday boy." She said rather cutely.

"I love you too, see you." He said before she hung up the phone.

"He is sooooo mad." Lydia announced to her friends, causing them to giggle. Lydia always thought he was super adorable when he was frustrated.

"Oh my god really?" Kira asked.

"So mad, it's so cute. He has no idea at all, this is great." Lydia concluded feeling a bit bad that Stiles was slightly annoyed with his best friend only because the whole surprise party idea had been hers.

After two hours had passed all of the guests had arrived, including the whole pack, a few people Stiles worked with at the station, Melissa, Chris Argent, and Lydia's mom. Soon enough the sounds of tires and the flash of headlights came pulling up in the driveway.

"He's here!" Isaac called out and everyone in the house took their positions and duked down behind couches and other pieces of furniture. Everyone waited for what felt like hours but it was really only a few seconds. Then the front door finally opened agonizingly slow.

"Hey Lydia, I'm home." He called out.

"SURPRISE!" Everyone shouted as they popped up and blew noisemakers.

"OH MY GOD!" He said flailing just before clutching his chest in utter shock Scott behind him patting him on the shoulder with a wide smile on his face, pleased that the plan had properly worked. "Wow, that just…wow." He said, a smile forming on his face.

"Happy Birthday." Lydia said softly as she walked up to him and reached up to his face bringing it down to properly kiss him, and his hands still didn't know where to go but he smiled happily into the kiss. "Are you surprised?" She asked when she pulled away, still gripping his face in her hands.

"Uh yeah, totally. I had no idea." He informed her, still shocked at the gesture and the amount of people currently in his house.

"Well good," she leaned up to peck him on the lips this time, considering he was still a few inches taller than her even with her high heels on. "and you're not mad anymore?"

"No, definitely not. But I still expect you to keep your promise." He said whispering the last sentence in her ear, causing her to giggle slightly and nodded to indicate that she did intend to keep it.

The rest of the party went really well. All of Lydia's efforts hadn't gone to waste. Stile kept her close, either by holding her hand or with his arm wrapped around her waist for the majority of the night until as they went and greeted all of their guests. Lydia's work was worth the stress she went through to keep it a secret when she saw that the smile hadn't once left his face. She knew he felt so loved and that was exactly what she had wanted to accomplish.

Once cake was cut and presents were open most of the guests had left but the pack stayed to help clean up and to scavenge for any leftovers. They stayed a few hours even after everything was clean, to reminisced and play a few games which was nice because it happened less often than it had in high school.

"So it was a good birthday at the end of the day then?" Lydia asked Stiles when she was cuddled up on his lap on the couch in their living room after the last of the pack members had left.

"Totally. Thank you so much. It was great to have everyone here. It was really nice to have all of the pack here too." He said kissing the top of her red haired head.

"Good, I'm really glad that you have so many people that care about you. Your dad helped me so much with everything too, I'm really glad he likes me." She giggled thinking about how lucky she was and how horrible of a father-in-law she really could have ended up with.

"Me too, and I'm also glad your mom likes me too. It was nice that she came."

"Stiles, she loves you. You make me happy; she's always wanted me to be happy." She said as she nuzzled her face into his neck as they sat in silence for a while. "Oh my god I almost forgot, I have one more surprise for you." She told him, not believing that she almost forgot about it with all of the chaos.

"Another surprise?" He raised an eyebrow as she pushed herself up off of him.

"Mhm, but it's upstairs." She said grabbing his arm and dragging him towards the stairs, turning off the lights in the house along the way.

"If you somehow managed to fit another party full of people up here I'm going to be super impressed." He said as they reached the top of the stairs and walked into the master bedroom going to Lydia's side of the bed.

"I hope you'll be more impressed with what I'm going to give you. Now close your eyes and hold out your hands." She instructed as she reached in the drawer to fetch the wrapped shirt box.

"I think I like where this is going." He chuckled at his own joke.

"Stiles." She huffed and rolled her eyes and placed the gift in his hands. "Open it." She told him and his eyes popped open and he began to slowly unwrap the present. He turned around and placed the box on the bed get the top of the box off easier.

"Alright so it looks like a white stick and a…bib…Lydia why did you get me a bib?" He said looking up at Lydia and back to the box a few times as Lydia tapped her foot impatiently.

"Stiles, what does the bib say?" She groaned and he looked back down at the open box.

"It says 'I love my Daddy', Lydia why does it…wait," he said as he began to put the pieces together and he grabbed the pregnancy stick from the box and held it up to his face so that he could read the word that said 'pregnant'. "Lydia, oh my god…are you…you're pregnant?" He said looking at her a huge grin taking over his face.

"Yeah, I'm pregnant." It felt so good to finally say it out loud; he was the first person she had told the smile on her face was growing so much her face hurt.

"Oh my god, you're pregnant." He whispered grabbing her face lightly and kissing her passionately on the lips as she held onto his wrists for support. "You're going to have a baby…our baby. How far along are you? When did you find out?" He asked her when he pulled away.

"Two and a half months along, I just found out last week. I'm sorry I didn't tell you sooner I just wanted to wait until tonight. And I almost told you at the party but I wanted this to be between us first, I wanted you to know first." She said biting her bottom lip.

"Oh my gosh, I am so happy right now. I'm glad you waited to tell me until we were alone. Mmmm, I love you so much." He said picking her up and she wrapped her legs around his waist as tears of joy streamed down their faces. "We're going to be parents." He felt like he needed to pinch himself.

"I know. You're going to be a daddy." She said now fully letting herself be excited now that Stiles finally knew. He was going to be a great father and she couldn't wait to see him hold their little baby.

"I'm going to be a daddy." He said trying to process all of his emotions as she leaned down to kiss him with force.

"I love you and I'm so glad you're excited about this."

"Lydia Stilinski I haven't been this happy since our wedding day. I can't wait to have this baby with you. I love you." He said laying her gently on the bed, kissing down her jawline and pressing a hand to her belly and rubbing it fondly.

"Mmmm, I love you too." She said simply as she watched him caress her soon to be swollen belly.