She Tried To Kiss Him

My boyfriend has been friends with this girl for 16 years. Me and him have been together a month in a half. He went to pick her up from a bar yesterday because she called him super drunk and he drove her home. He came back looking really upset and he told me she tried to kiss him. I was so pissed off. Today she came by his house. I was spending the night and he said "I'm gonna talk to her". He went downstairs to talk to her and I went to listen. She was apologizing and he said "You disrespected me and made things weird between us". She said she was so sorry and that she was drunk and she will apologize to me also. He told her he doesn't know if they can be friends again. That she crossed a line and things are gonna be weird now. She said she doesn't want to lose him after years of friendship because she was stupid. He said he doesn't want to lose her either, he just doesn't know if they can go back to how they used to be. There will always be this weirdness. She asked if they could try, and he said he would think about it. Thats the short version. I really don't want him being friends with her anyone, but by how long they've been friends and how long we've been together I feel I dont really have a say. They've been through so much together so I'm 100% sure he's gonna give her another chance. He has been really stressed thinking about the whole thing