I think I did something wrong idk if I did?

Soo a week ago I started too realize that I don't love my bf anymore. And it kills me too think this, and I've been arguing with him more than ever. And everyone around me my family my friends are telling me that I should break up with him and go find someone that will make me happy. I think I'm Bipolar and my bf can't really seem to handle my mood swings, he just goes crazy on me when I'm having one and gets mad at me because I'm either depressed or really mad at of nowhere. My friends have learned to just deal with it and be there for me. 3 days ago we had a really huge fight, and we broke up. But he's calling me and emailing me saying he's sorry and all like he always does, and I forgave him. But I don't think I can take his impatient attitude anymore. We have been together for 2 years. And I dont really remember why I got with him in the first place. But the other day I did something bad I think it's bad. I went out too eat with my ex because we are really good friends still. And he's Bipolar and we get along soo well. I cant remember why we broke up. But I went back too his place too help him take his clothes in the house that we bought that day, and we ended up in his room on his bed cuddling and just snuggling too each other eventually we fell asleep. I was there for 4 hours, when I'm with my ex I feel soo safe, and so loved and cared for, and I get erflies when I'm going too see him. And there's a ual attraction there, and with my bf now there is no ual attraction, although I do care for him. Idk what to do. I see my bf 1 a week if I'm lucky, and when I was with my ex I saw him almost everyday even though he didnt have no money too see me he found a way. But my bf now he just tells me "I have no money sorry, but I love you." It just erks me inside.