Closure or keep him blocked???

So I hooked up with one of my closest friends. We both agreed that we wouldn’t let this affect our friendship but it deeply affected everything. I never wanted this to be just a hookup I actually wanted a relationship with him and he knew that. Before the hook up happened, we were going on dates and things were going great. Then our hormones got the best of us and we ended up hooking up after one of those dates. After that everything changed. He no longer talked to me not even as a friend and he wanted to keep it that way. After a couple weeks of distance, we finally hung out with our friend group. I thought that seeing him was what I needed but I was so wrong. He kept checking out girls and asking them for their numbers right in front of me. This hurt because I’m still not over what happened and he’s perfectly fine moving on already. He had told me he also wanted a relationship but after the hookup he just ghosted me. I was just left super confused because things were perfect and after the hookup he just ghosted me. I ended up unfriending him on snap because I do not want to witness him moving on. I’ still hurt and need my own time to heal from this and if I see what he is doing I will continue to dwell over him. However, I never got the chance to actually talk to him about it. He’s not the type of guy who likes to talk about stuff like this plus I don’t think he even cares since he’s already moved on. I’m just confused on what to do because I never talked to him about this so I have no idea why he decided to ghost me and quickly move on. But at the same time maybe some things are better off unsaid :/