My ex bf and I tried to communicate normally after our break up (3 months after low contact, he was the dumper) and hang out with our mutual friends. But it didn’t work out well because he got upset over something. I can’t even remember what exactly we talked about. He seemed ok one time and then get annoyed because of something stupid. He was very moody. And one day he texted me it’s time to block me on everything and was very clear he doesn’t want me to contact him anymore. So I did. I was surprised because in my opinion- I didn’t give him a reason. But I accepted it and tried to move on. Two weeks ago I recieved a message from him saying ‘Can we get in touch again? ?’ Next day I checked out my FB and there was a friend request from him. So he also unblocked me. I didn’t reply the request. Actually I deleted it. He was so mean back then so he should probably apologize and then I can change my mind. But after few days of NC I started to feel better and I rather don’t want to communicate with him after all this progress.
It was hard to me to accept just friendship before but I tried and didn’t mention anything. Didn’t beg or plead. But it was all still weird for me. I acted in non flirty way and was joking and focused on finding someone new. Before he blocked me he wrote he thought I’m still not over him. (He found all this joking as flirting so it was probably the reason to block me. I denied it but it didn’t matter.)
I still have some feelings for him. Some days I’m ok with the idea of never talking to him again but I still hope for something. But I plan to continue with NC to not hurt myself again.
Do you think it’s a good idea to stick to no contact? Do you think he will contact me soon? Is his unblocking a sign of anything? I noticed he started to follow me on Facebook as well. NC is not a manipulation act in my case. I really wish to avoid false hopes.

Thank you for your responses. I’m really strong but I’ m also curious.