I need a mans perspective on my current issue.

I dated a man for 8 years. 3 years into the relationship we got engaged. It was a beautiful heartfelt proposal. We were truly in love and very happy. One year later we had a child together. She was planned regardless of the fact we weren't yet married. After she was born we remained engaged for 2 more years. 6 months before our wedding he broke off the engagement. I was hurt obviously but I loved him and stayed with him 3 additional years. The reason he gave for breaking off the engagement was that he had done it before with his ex wife and never wants to get married again. It didn't feel right. About 4 months ago he dumped me. Just out of the blue. We were separated for 4 months but then began sleeping together. He explained to me that he dumped me out of mercy. He doesn't want marriage and I do and we would never see eye to eye on that. He wanted me to be happy and find someone who was willing to get married with me. Hardest time of my life. We are still sleeping together and I don't know if I'm doing the right thing here. I still love him and I would marry him in a second if he would. But he's given zero signs that he ever will. He texts me all day every day but still has yet to say he will ever marry me. My question for the men, am I wasting my time here? Or is there some chance he is seeing what he lost and will eventually get there? Or is he just using me for sex. Please be brutally honest because I'm considering stopping this. Our relationship was amazing. Very little fighting. We were a good match. Great sex and and take care of our daughter together well.