Peter's at her door trying not look like a crazy person. She couldn't just end it after everything they'd both been through. She needs to know that he would fight for them.

He knocks on her front door, loudly. Peter wasn't sure who would answer. When it's Lara Jean, he gets right to the point.

"Hey. We need to talk."

Lara looks over her shoulder and shakes her head, "Not here." She steps outside and closes the door behind her. Peter didn't like the looks of that. If she was keeping him out of her home, maybe she really was ready to end it.

He follows her as she walks down the porch steps.

"Just so you know, nothing happened between me and Gen last night."

"No, what happened was you went to her room in the first place." Lara Jean's upset and Peter's not surprised but she just doesn't get it.

"Look, Gen and I dated for a long time. Okay, those feelings aren't just going to go away, I mean we have history." When Gen broke up with Peter, she had asked if they could still be friends and although it hurt like hell at the time, Peter was grateful for it. Gen was far from perfect and maybe Peter had blinders on for most of their relationship, but Gen was still someone he had loved.

"I'm tired of being second best or fake best." Lara Jean looks so hurt, Peter knows he needs to make this right.

Lara Jean didn't understand. Just because he wasn't in love with Gen, didn't mean he didn't care about her. He'd always care about her. Peter needed to clarify, he was in love with Lara Jean, he just needed to tell her.

"No, no, no you do not get it, okay? Last night wa—."

"Last night was a mistake." It hurts Peter to hear Lara Jean say that.

"Physical stuff might not be a big deal to you, but to me, it is."

Now Peter's hurt because of course what they did meant something to him. More important than the kissing was the fact that Lara Jean trusted him. She had felt safe enough to just be with him. It was a huge deal.

"Who says it's not a big deal to me?

"Says every single guy in the bus! Clapping and praising you like a god, and you're just eating it up."

Peter needs her to know he would never brag or embarrass her like that. He was not that kind of guy.

"Okay. Look, I…"

"Peter, just leave." Lara Jean is done with their conversation and Peter can't handle it.

"Can we go inside and talk?" He sounds like he's begging when Josh emerges from behind LJ.

"She asked you to leave, buddy."

What the hell was Sanderson doing over here?

"Josh, I'm fine. Go back inside."

Had he been inside when Lara Jean said Peter couldn't? Was she keeping something from him?

"No, it's alright." Josh gets all showy and huffy like a dog, defending his territory.

"No,no,no,no are you serious now?" Peter doesn't want to believe what he's seeing right in front of him. Josh Sanderson protecting LJ from him.

Peter looks at Lara Jean and waits for an explanation. She offers none. Her silence speaks volumes.

"Wait, this isn't about Gen and me at all, this is about you and Josh!"

Peter feels stupid. He should've known better.

"Are you kidding me? This is the reason that you broke up with me?"

He can't help but sound hurt. Peter had stopped pretending a long time ago.

"You're still in love with this Bon Iver wannabe?"

And now instead of fighting with Lara Jean, Sanderson speaks up.

"If Lara Jean broke up with you, it's probably because she's coming to the life-altering revelation that she's too good for you."

"You're in love with Josh?"

Peter sees they have an audience now and the girl who just spoke up is on the verge of tears. He recognizes Kitty but the older girl holding her hand is someone he hasn't really met; Margot.

Lara Jean looks to her older sister, a type of concern Peter's never seen from her.

"Margot, no…" And now, Peter believes her words.

LJ's older sister is running back into the house and closes the door behind her before Lara Jean can get to the porch to talk to her.

Peter had crossed a line. Now Margot knew about Lara Jean's feelings for Josh and it was Peter's fault.

Lara Jean had been very clear that she couldn't be with Josh because she would never do that to Margot.

Now she's got tears in her eyes and her voice is cracking, "Peter, go home!"

Peter looks at Josh and can't help but be jealous of him. He has one more thing to say before he leaves.

"God. You were never second best."

He leaves her with those words and does as she asks.