forced into a relationship..

Hey guys... So I'm engaged to an amazing man. But we broke up several months ago because we are just too different. He has a different religion and a different background and he makes different choices and I just couldn't see eye to eye with him. Right after that he tried to kill himself, and immediately right after that he told me he needed to try to make things work with me. I said yes, but I feel like I said it because I was scared he would try self harm if I said no. Since then, our relationship has been great, and I do love him, and we are doing good at settling our differences, but we had a fight the other day and sometimes I just feel like I'm trapped.. Everyone says that I'm not, and that I can go if I want. But if something happens to him I don't know what I would do. Anyone have any advice for me?