<human>: I'm (F24), he's (M26), relationship of eight months.

Last night, my boyfriend hung out with a bunch of his friends and I stayed home because I was feeling sick.

Apparently, one of his female friends got really drunk last night and was extremely shitty towards him the entire time. They got into an argument and she slapped him as hard as she could. I guess her ring caught the side of his face because he came home with a pretty big cut on his cheek and had blood on his shirt.

I almost took him to the ER to get stitches but he said it wasn't that big of a deal. I still think he needs to get stitches though.

Anyway, she called him this morning and apologized for hitting him. She said she was drunk and didn't mean to. He accepted her apology and now it's like nothing happened. 

I fucking hate this girl. She's always been a fair weather friend to him so it's not like she's important. She's a loser and needs to fuck off.

Would I be out of line if I asked my boyfriend to end their friendship?

Can you give me a shortened version of the text?
<bot>: Boyfriend's female friend hit him, left a cut on his cheek, has apologized and now acts like nothing happened.