I think I'm his rebound but also does he think im his safe space?

After several months of not seeing each other , I'm so stupid, I let him makeout with me, everything he sent and ask for , was basically lust. Now I didn't sleep with him like he wanted or let him eat me, but I gave him stuff and he poked me. When we got in the car, he asked if he could be honest and said we should lay low on the casual hookups because he's trying to better himself and our friendship. (Mine you he made all the first moves &im his ex) Then he was talking about he doesn't like casual and not getting what he wants from someone he has feelings for. He started talking about this girl he met a year ago and how he's been off and on with her. She wants to stay single. I call it karma because that's what he did to me. And I thought I could enjoy my work with it being ruined by talking about another girl
I can't do this any more, it's annoying
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9 mo
Also can someone explain why he choose that moment to get into his feelings, like what did I do to make you talk about why can't I (he) be with her?
I think I'm his rebound but also does he think im his safe space?
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