What does he want from me?

Hi everyone, I’m looking for advice on my situation. I was seeing someone for a few months, but at some point, I realized that we were not compatible, so it didn’t get any serious. At the same time, I met another guy that I really liked. He really wanted to hang out with me, were asking me out a few times per week, but I told him that I was seeing someone else. He said, “let me know when you end that relationship” and pulled away a bit, although we were still in touch. A few weeks after I decided to break up with a guy I was dating because it was not going anywhere. I let the other guy know that I’m single now, and sometime after that, we met and had sex. He said he was waiting for it “for so long.” However, at the same time, I know he’s not over his previous relationships, which ended six months ago. He had a really bad break up couldn’t sleep for months and still has some issues. With this in mind, but also knowing that he was so into me, I kinda expected that we would move slowly, at least start to talk more often… but he just pulled away. He’s watching my social pages, but no texts or calls. I feel very confused now.

I kind of sense that he still likes me, and he was assertive, almost aggressive in the begging. I asked him before if he just wanted sex, but he said that if he wished to just have sex, he could have had found it with anyone else, and he’s interested in me as a person. However, now, his actions demonstrate the opposite. The problem is, I think I’ve already developed some kind of attachment, and I can’t stop thinking about this situation. I feel like we are incredibly compatible, and if we decided to move things forward, there would be potential for good relationships. But I’m getting really mixed signals from him now and don’t understand if he would ever want to proceed. What should I do?