Vidoechat in September, he asks you to plan a coffee date, you take several weeks to do that, he doesn't take your calls. He takes your call in January, you chat but didn't give details about a coffee date. He makes an excuse to end the call. You message him, and he doesn't read it and 2 months later you call him again. You chat, he tells you he's changed his mind about things and eventually he starts saying unpleasant things and treating you poorly. Do you see any social signs in this situation that indicate you have a genuine interest in meeting a man who is looking for a serious relationship?

Only he can answer the question about why he behaved the way he did. It wasn't the mature way to behave. I would let him go and not contact him.

I'm curious to know how old you are that he would ask about you having a curfew. Most adults don't have a curfew.