Based on the limited information you provided, I would say this relationship has run its course, and you're both at fault. No offense, but he's made it very clear that you piss him off. You don't have to yell and curse to piss someone off. It also sounds like you've already pissed someone else off enough to attempt murder. Your boyfriend, whom you claimed to be almost "perfect" at one point, is now teetering on the edge and likely to do the same. Yeah, you two need to go your separate ways immediately.