I love you too, now im going to tell you a poem (that i stole.)
we're done.
After the night Lara Jean went to make up with Peter, Peter takes her on a movie theatre date. Geniveve happens to be there but Peter and Lara Jean try not notice. They have a good time and eat popcorn. 
wow we're having so much fun
This is like, so romantic :D
 For valentines day Lara Jean makes Peter his favorite cookies. Peter buys her a necklace she’s always wanted. He ends up reading her a poem he didn't write.
What are you doing here?!
 Peter is always there for Genevieve and it’s making Lara Jean Uncomftorable. Meanwhile, Lara Jean is writing letters to John. Peter and Lara Jean end up breaking up.
Actually, I still love you.
yeah, same.
Lara Jean and John get a lot of one day while working at the retirement home, so they had to stay the night there. In the middle of the night they sneak out and play in the snow. 
They have a party at the retirement home and they have a really good time. They somehow run into Gen and Peter together, so they drive away. Lara Jean and John end up having their first kiss in the car. 
Lara Jean and John agree that now is not their time. Peter still misses Lara Jean and she still misses him. They meet up in their childhood tree house the night before it gets taken down.