Suidical boyfriend, want 2 breakup?

My boyfriend and I have been together for over 1 year now and honestly I’m just not wanting to continue it as much as I love him. My studies are getting in the way and it’s ether I fuck up my education in university or I fuck up my love life. Reading this through I know I sound like a shitty person. The thing is my boyfriend says to me like 12 times a nkt has it so that if I ever leave him he’ll kill himself, I know he’s not joking as when we had an argument and stopped speaking to each other for 1 month due to him talking to another girl and telling her that I had moved away to a different country and left him he started sending me pictures of him cutting himself. I’m just in a really difficult situation because I want what’s best for him and me and obviously I love him, I just don’t want anything to happen to him as it’ll be my fault.