Confused on what to do

So I used to date this guy but things ended because there was just bad communication between us. He went ghost on me last year and when we finally started talking again he said it was because he was going through stuff. I think he may have seasonal depression because he always becomes distant at the same time every year. Anyways we started talking again and tonight was the first time in a long time that we hung out. He wanted to kiss and for some reason I just wasn’t quite ready for that yet. We haven’t been affectionate or sexual in almost a year. I guess I’m scared to become intimate so quick because then I’ll become attached and I’m scared that he’ll just go ghost again and I’ll end up being hurt. Eventually I do want to be affectionate with him but I feel like it just may take a little bit of time. He got mad about it and I tried to explain everything to him but I don’t think he understands. Not sure on what I should do. Any advice?