Is it worth re starting a friendship, in hopes to reconnect and start again or should I fully move on?

I used to work at a pub and me and a manager had been flirting on and off for 7 months and when it had gotten to the point where I thought something was going to happen he then got back with his ex. During the time he was with his ex we both stopped flirting, however he did keep asking how my dating life was going, but as he was with his ex i just assumed he was asking as this was something we’d talked about previously when were both single.

However him and his ex ended up breaking up and shortly after they did, and i had left the pub, he liked me hinge. After a few days we hooked up, and i went round his, however after we had slept together he did then kick me out right after as he flat mate was coming back. I assumed that it was a one time thing due to this and when i did see him next (after a few days) i have to admit i was a bit cold and didn't really talk/engage to with him, whilst he was his normal friendly self and kept trying to catch my eye. This did confuse me so i messaged him after this just asking why he hadn't messaged since our hookup and he said that he was ‘in his head’ about it and wasn't in the right place for a causal thing at the moment. As i couldnt really do a super casual just sex thing we agreed to leave it and just be friends.

However I then didn't see him for about 3 months at all, and when i did see him randomly again recently I did smile and wave to say Hi as i was walking past but didn't stop to chat as he was with a group of people and i was meeting a friend.

since this i have seen him a few times, he doesn't seem to want to look at me and when we are with our mutal friends and doesn't speak to me. I am always friendly and smiley and would like to try and start a conversation but do still get nervous al, especially now since he wants nothing to do with me.
I would like to re connect our friendship as we were good friends, but i when i am around him, he acts like he doesn't want to talk to me/look at me


What should i do?

Is it worth re starting a friendship, in hopes to reconnect and start again or should I fully move on?
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