So my girlfriend's best friend likes her. He constantly flirts with her and sees her more often than I do (one year grade difference between them and me). I don't know what to do. She's already told me she didn't have feelings for him and I trust her but I'm scared shitless about him.
Hey i totally understand where you're coming from, in a situation like that it might make sense to talk to him, to let him know its your girl and to respect what you two have.