Author's notes: This is my first time writing for this fandom. Please know I have only seen the adorable Netflix movie...I have not read the books...so this is firmly placed in that universe. I do not own any of these characters. The movie has just stayed with me and I needed to write something from that. It's also unbeta'd so all mistakes are mine.

Part 1

As soon as the clock struck zero Lara Jean found herself running onto the field. Even surrounded by all his teammates her boyfriend was easy to spot...his dark curly hair a dead give away for the boy she loved. He turned towards her as she was still running and smiled...leaving his celebrating friends to get to her. When they met she wrapped her arms around his neck and he lifted her up...her legs instinctively wrapping around his waist.

"You did it...you won! I'm so proud of you Kavinsky!"

"I can't believe it! Going out as state champs! I'm so glad you were here."

"There is no where else I'd rather be."

With that Peter rested his hand on the back of her head and brought their lips crashing together.

"Get a room you two."

Breaking the kiss, but never looking away from Lara Jean, Peter yelled back to his friend.

"Shut up Greg because if you don't we are not going to your party tonight."

Lara Jean smiled at Peter and added her own two cents.

"And then who would you play beer pong with Greg?"

"Largie you wound me! I better see you guys tonight. We have to celebrate. State champs baby!"

Greg went off to celebrate with the rest of the guys as the young couple continued to bask in their own bubble.

After some time the crowd had thinned out and Lara Jean and Pater were left alone in the middle of the field. Wrapped up in each other. Foreheads kissing.

"I should probably get changed."

"Ok. I'll be by the car. Hurry up state champ. I need to get home so I can change for the party."

Peter began running towards the locker room but then suddenly turned back to look at his girlfriend.

"You know winning today was the second best thing that ever happened to me on this field."

Lara Jean smiled and even thou she knew the answer she asked him...

"Oh yeah...what was the best thing?"

"Telling you I loved you Covey...it's actually the best thing that's ever happened to me period."

"I love you too Peter Kavinsky and not in a fake way."

Peter raised his hands to his heart and then turned to head to the locker room.

About 15 minutes later Peter and Lara Jean were in his Jeep heading to her house.

"I didn't see your mom at the game..."

"She probably got stuck at work. I'm sure someone will post highlights online that I can show her later."

"Well I for one am glad I got to see it in person. You were amazing! It's the best I've ever seen you play."

As Peter pulled up to her house Lara Jean leaned over the center console, quickly kissing him and then resting her forehead on his.

"Dads home. I don't want him to look out the window and see his daughter making out with her boyfriend in his car."

"Definitely don't want that. I'll pick you up in an hour for the party?"

"Sounds good. Love you."

"Love you too Covey."

A quick kiss later and Peter was driving back to his house excited to tell his mom they had won. His excitement faded when he pulled in his driveway. There, parked next to his mom's car, was his dad's. In the years since Mr. Kavinsky has left his family he had tried to see the boys a handful of times, but never at the house. Peters's imagination went wild...what if something had happened to Owen, or to his mom? Or what if his dad wanted to come back home, start over, make emends? He found himself running into the house.

"Mom! Mom!"

"In the kitchen Peter."

Peter released a breath he didn't know he was holding. His mom sounded strained, but not scared or sad...Owen must be fine. Turning the corner into the kitchen Peter was met with a sight he never thought he would see again. His dad was sitting across from his mom at the kitchen island, cup of coffee in his hands. It reminded him of when he was younger...waking up on Sunday mornings and finding his parents sitting at that very same island drinking coffee and sharing the newspaper. He was snapped out of his memory by the sound of his mom's voice.

"How was your game Peter?"

Peter looked between his mom and dad for a second before answering.

"Um. We won actually. I thought you were coming?"

"Oh honey that's great. I'm sorry I missed it. I was heading there when your dad came over..."

"He just came over...without calling...he can't do that."

"Peter please sit down your father needs to speak with you about something."

"No I have to get ready. Greg is having a party to celebrate and I need to pick up L..."

"Please just sit down Peter what I need to say is important. I'm sure your girlfriend can find a ride to the party...Gen has always seemed like a resourceful girl."

"Lara Jean. I need to pick up my girlfriend, Lara Jean. Gen and I broke up over a year ago. If you had been acting like a father these past few years you would know that."

"Knowing who my teenage son is dating is not what makes me a father!"

"Maybe not. But spending time with your kids. Helping Owen with his homework. Coming to my games...that makes a father and since the day you left you have done none of that. So I don't care what you came here to say. I have a girlfriend I love and who loves me waiting to be picked up so we can go celebrate and I need to shower."

As Peter turned to leave the kitchen his mom put her hand on his shoulder.

"Peter please just sit down and listen to him. It's important."

Peter looked at his mom. She looked worn down but her eyes were pleading with him. He turned to his dad.

"Fine. You have five minutes."

He would give his dad some time but he would not give him the satisfaction of sitting with him so instead Peter walked back, leaned against the opposite counter and crossed his arms over his chest.

"Peter do you know what leukemia is?"

Peter tensed up.

"Yeah it's a kind of cancer."

"Yes well your brother has been diagnosed with it and..."

"WHAT?! Owen is sick?! Why didn't you just say that? I would have..."

Peter felt his mom's hand on his arm again.

"Peter, sweetie, it's not Owen. Owen's not sick, he is fine."

Peter looked at his mom as she spoke, relief flooding his body. But then he realized what she was saying...what his dad was trying to say...and he was filled with anger.

"This is about you new son! Why would I care about your new family?! You left us for them! You left mom and me and Owen for your new and improved version. Screw you dad. I'm sorry the kid is sick but he's not my brother. There was no need for you to come here. Leave! I said LEAVE!"

"Peter please calm down. Your father needs to ask you something. I just need you to listen. Please baby just listen to him. If not for him, for me. Peter please."

He looked at his mother again. Why should she care what the man who left her had to say? But she was begging him to listen and he would never let his father think that he didn't respect his mother enough to listen to her.

"Fine. What else do you have to say?"

"He was diagnosed about a month ago. The doctors said a bone marrow transplant would be the best course of treatment and that a marrow donation from a family member are strongly suggested. I was tested, so was your uncle and my wife and her family but none of us are a match. Owen is too young to donate but I was hoping you would be willing to get tested and if you are a match that you would be the finer."

Peter was in shock. He had barely seen or heard from his father in years and when he does finally come around its to ask him to save his new son! Peter didn't know whether to laugh, cry or scream but in the end the anger that had been building since he had walked into the house (and if he was being honest the anger that had been building in him since his dad left) won.

"Are you kidding me?! This is why you are here? This is why you have finally come to see me? To save your new son? And what? I'm just supposed to forget how you left us. Forget all the pain you have caused mom and Owen and me. How dare you. HOW DARE YOU! You haven't spared any of us a second thought in years but now your new family needs my help so here you are. Did you expect me to just say yes? Did you think I was that hard pressed for your attention, for your love, that I would agree to anything just so you would love me again? I have love dad...I don't need it from you. Mom and Owen and Lara Jean love me for me and they show me all the time that I deserve that love, not because I do anything for them but because I strive every day to be a good person, a good man...everyday I work to make sure I'm never like you. Again, I'm sorry your son is sick but you have no family here. No one to be tested. So just go. Figure out some other way to help your son."

Peter stared at his dad willing him to just walk out the door again but the man didn't budge. He just stared right back, his sad eyes pleading with Peter. Once again his moms voice filled the room.

"Peter it doesn't take much to be tested. Maybe you should at least do that. You are probably not even a match."

"You're on his side?! Mom! How can you be...after what he did to you...to all of us? I thought you would be with me on this. He left us. Walked out and never looked back until now...until he needs something. What's wrong with you? You can't possibly support him. Mom please tell me you don't."

"I'm not but..."

"No. I don't want to hear it. I can't hear you make excuses for him."

Peter looked between his mom and dad. Both seemed firmly entrenched in the kitchen and suddenly the kitchen felt like the smallest room on the planet.

"Fine. If he won't leave I will. But he better be gone when I get home."

Peter stormed out of the kitchen and right out the front door. Faintly in the background he could hear his mom calling him but he didn't care. He couldn't be there anymore. He couldn't look at his father anymore and he couldn't bear to hear his mom defend him. Before he even realized where he was going he found his Jeep pulling up to Lara Jean's house. Kitty must have seen him pulling up because she was opening up the front door for him before he even reached the porch and ushering him inside.

"Peter! Congrats on the game. That's so cool! Lara Jean is still in the shower...you wanna watch some 'Golden Girls' with me while you wait?"

He wanted to say yes. He loved Kitty. She was the little sister he didn't have. But all he wanted was to wrap himself up in Lara Jean and forget about everything else in the world.

"Kitty you know I would usually say yes but I just really need to see Lara Jean right now. I'm sorry."

Kitty must have seen something in his face because her whole expression immediately changed to concern.

"Are you ok Peter?"

"Yeah. I just...when I went home...it's just some parent stuff."

Kitty seemed to take that in for a second.

"Ok. I'll tell Lara Jean you are here. You can wait in her room if you want."

"Thanks Kitty. I'll definitely take a rain check on the 'Golden Girls' thou."

Kitty smiled at him and headed upstairs to the bathroom. Peter followed behind, let himself into Lara Jean's room, and sat with his head between his hands resting his elbows on his knees.

He wasn't sure how long he had been sitting there when Lara Jean bounced into the room, wearing one of his sweatshirts her head down as she ran a towel thru her wet hair.

"Hey Kavinsky you said you would give me an hour. It's not fair boys can get ready so much faster than boys..."

She stopped talking the minute she looked at him. They had been dating for over a year and she had never seen him look so young, sad...lost. Lara Jean dropped the towel as she went over to the bed and placed her hands on both sides of his face.

"Peter what's the matter? Are you ok?"

His eyes, filling with tears, tried to focus on her face. God, he loved her so much. Peter tried to speak but the words were still too much for him to bear so instead he wrapped his arms around her waist, pulling her into his lap, and buried his head in her embrace. Lara Jean knew her boyfriend...he would tell her what was going on when he was ready so in the meantime she held him close, periodically kissing his hair.

At some point the young couple laid down on the bed...their legs tangling together, arms wrapping around each other and their foreheads touching...and just as Lara Jean knew, when he was ready, Peter spoke.

"When I got home my dad was there. He was just sitting at the island, drinking coffee, like nothing ever happened...like he never left us. And my mom was sitting there too. I didn't understand what was going on. A thousands things ran through my mind. I really didn't want to see him...talk to him. I was so happy after the game...so looking forward to the party and you. I tried to leave but my mom asked me to stay...hear what my dad had to say...so I did...for her. But I should have left. Nothing good ever comes from him. I should have known and I should have left..."

Tears threatened to pour down his face but he wanted to get this out. He wanted to tell Lara Jean what had happened. He needed to. He loved talking to her. Loved that he could share anything with her. It's one of the reasons he fell in love with her to begin with. Peter took a shaky breath and continued.

"His son...his new son...has leukemia and needs a bone marrow transplant. The doctors say a family member is the best kind of donor...no one has matched yet thou. He was at the house to ask me to be tested. I haven't seen him in forever and the first time I do he is asking me to help him. I couldn't believe it...I still can't. The nerve of him. I was so angry I left. My mom was calling out for me but I couldn't be there anymore. I had to leave. I had to be here. I had to see you."

"You're here. I'm here. It's just us. I got you...whatever you need."

"This...just this...at least for a little while."

Lara Jean nodded her head and then melded her body into his embrace. After awhile she heard his breathing even out and knew it meant he had fallen asleep. Her mind was racing. Peter has spoken to her about his father...about what him leaving felt like. How he felt about him. But this...this was a whole new thing. This man basically ignored his family for years and then when he finally comes around he is asking Peter to save his new kid...Lara Jean felt an anger build within her that she had never felt before. She could strangle Mr. Kavinsky. How could he do that to Peter...how could he do any of it?!

Her thoughts were broken by the sound of her dad entering her room.

"Hey Lara Jean. Everything ok? Kitty mentioned Peter..."

The teenagers tried to untangle their bodies but weren't fast enough.

"Uh sorry Mr. Cov...Dan. Some stuff is going on at home and I came here and I guess I fell asleep. I wasn't...we weren't...I wouldn't..."

"It's ok. Kitty mentioned you came here upset and Lara Jean's door is wide open...so I'm going to give you the benefit of the doubt...this time. I brought home pizza you are welcome to join us."

Peter looked at Lara Jean. She simply smiled and squeezed their still intertwined hands.

"I would like that. Thank you."

"Ok. I'm going to go set the table. See you two downstairs in a few minutes."

"I know we had the party but I'm not really in the mood for..."

"Hey hey no argument from me. We can make sure to celebrate with Greg some other night...but you should probably text him and tell him we are not coming."

Peter nodded his head and grabbed his phone.

"Hey some family stuff came up...everyone is fine...but Lara Jean and I are going to skip the party tonight. Sorry."

Greg answered back quickly.

"Everything really ok, man? Bummed u r not coming but get it. LMK if u need anything."

"Greg's cool."

"I knew he would be. I'm more concerned about you right now..."

"Is it ok if I say I don't know?"

Lara Jean placed one of her hands on his face as she spoke.

"Of course it is."

Peter shoulders noticeably relaxed.

"I'm still really angry but also...it's not this kids fault he is sick. It's not the kids fault that our dad is a jerk. Am I being selfish not getting tested...should I love this kid just because we have the same dad? He is my half brother...if Owen was sick and the kid could help him I'd want him to. I just don't know what I'm supposed to do here. Am I a terrible person if I want nothing to do with my dad, his new family and this entire situation?"

"You could never be a bad person Peter. I know you and I know your heart. You are a good man and you are totally allowed to be feeling all of these things."

"What do you think I should do?"

"I don't know Peter...do you know what's involved in being tested? Or what would happen if you were a match?"

"No. I ran out pretty quick."

"We can google it...or...we could ask my dad. He's not that kind of doctor but he may know the basics or even a doctor you could speak to. Are you ok sharing this with him?"

Lara Jean could see Peter thinking and after a brief moment he nodded his head.

"Yeah. Your dad trusts me with you. I can trust him with this."

Lara Jean leaned over a gave him a quick kiss.

"We better head down before my dad thinks he can't trust you with me."

With that, for the first time since she found him in her room, Peter laughed...not one of his adorable nose scrunching laughs or one of his full belly laughs...but it was a laugh and Lara Jean was going to take what she could get right now.

She grabs his hand as they both get up from the bed and head down the stairs.

"Hey dad where's Kitty?"

"She has plans with some of her friends. Mrs. Klein just picked her up. So it's just us three tonight."

Lara Jean looked at Peter.

"Thats actually good...umm Peter and I...Peter has..."

"I was hoping I could talk to you about some medical stuff."

"Are you ok Peter?

"Oh yeah...it's not really me. Ummmm. You know my dad left us?"

Dan sadly nodded.

"Yeah...well...he has a new family now...a new wife, a new son..."

Lara Jean could sense Peters anger building so she squeezed his hand. Peter looked over at her and let out a small smile.

"His son has leukemia and today my dad asked if I would be tested to see if I could be a bone marrow donor. I didn't really stick around to ask any questions. So I was kinda hoping you could maybe answer some of my medical ones?"

"It's not my field but I have some working knowledge of it. I can try to help. What do you want to know?"