Is he just trying to keep tabs or is he catching feelings?

My ex situation and I were always on and off. He was possessive but not enough to date, and overall really toxic, so we would always end it on each other but also always come back to each other. This time, we decided to keep it as sex. That’s what it was really always supposed to be but he would turn it romantic. But then it felt weird to me because he said he didn’t want me to talk to him about anything personal and felt that “the less he knew, the better” and how he “doesn’t like half the people I talk to”. But then added my Facebook and snap, where I clearly post personal things? So that seemed off to me. And then he was there for me when something serious was going on 2 days ago and sat with me for hours, stayed up late in the night for me, we talked about personal things, he hugged me when I left, and checked on me the next day. But then I got in my head about potentially feeling for him still and deleted him a few hours later. He noticed it and messaged me about it, asking why and saying he doesn’t get it. When he asked, he said he was “snapping a friend” but doesn’t name the friend, like he used to, so I got suspicious that it’s a girl.

The whole thing just seems weird to me and I can’t handle being hurt. I have too much on my plate already. I’m only even talking to him because I have nobody