Need advice asap

So I dated this guy back about this time last year. we dated for 6 months or so. We had a some what messy relationship, and in the end I was the one who cut him off. This was because of the change I felt in our relationship. He felt not loyal, I felt he was talking to other girls. And when it came to me, he only cared about sexual things. I felt like an object to him, after months of our meaningful relationship where he was basically my best friend. I blocked him a while ago and we’ve been no contact.

i still struggle with a lot of big feelings about this relationship. There’s a lot of things about it that I think about. I feel I need some kind of closure, some kind of answers to my questions. He’s the only person I’ve had real feelings for, and I want to know if he actually loved me. I want to know the full truth if he used me and cheated on me. We never really talked about the end of our relationship, it was an abrupt ending. He meant a lot to me and still does, but generally isn’t a great person.

i want to know how I should go about this. I was going to unblock him and message him to talk it out, kind of break up a second time. I’m scared he will take this the wrong way and think I want a relationship with him again which I don’t. Or he will see me as desperate.

out of curiosity, I unblocked him and stalked his following and found out he’s following a bunch of new girls. Which means he already has moved on or is talking to new people. I’m not sure why this threw me off and made me feel iffy about thinking of texting him. Again I’m not sure why because I have dated two people since we broke up, and I have no intention of dating him again.

what should I do? If there’s anything else u think is important I can answer questions