PLEASE HELP ME!!!

Looooongg story made short, nearly a year I've been seeing this lad every week and yes I think I love him, we do have sex and do things like drink and hang out and stuff with each other every single week the past year. Only thing is he has a psycho girlfriend.. He tries to get rid of her but they've been together 3 years and he despises her.. She threatens suicide and I think he's just afraid it wud come back on him. He ended it 2 weeks ago with her and he says he likes me and wants to be with me to his friends and my friends, I don't know what to do because I never ask questions about us or him and her and to be honest I don't have the balls to.. Do u think he genuinely wants to be with me or is just playing around messing with my head, Please can anyone tell me what to do because I'm going insane if I can't do anything any longer about this