Confused

I’ve been with my boyfriend for 4 years. I had a chemical pregnancy about two weeks ago and I was sad and he wasn’t there for me. He broke up with me 4 days ago because he wanted to “live life” now he wants me back and I took him back but I just don’t know what I want. I feel like im breaking his heart if I tell him that I don’t want to be with him but also He broke mine.. what should I do?