Is this guy TOXIC?

Anonymous
I know this guy who is in his early thirties (30 exact). At first he was nice. But I have started to notice he isn't that nice honestly.
He took my number and messaged me after several days, asking really generic stuff. He added me on Facebook and Instagram. It was OK until I started to notice changes in his behaviour.

I posted multiple pictures of my friends and I hanging out on Fb/IG (he saw all my posts) and when I met him the next day, he wasn't talking to me. He acted like he barely knew me. When I said hi, then he got normal. I also met friends around him and he looked a bit annoyed seeing this.

After that, he stopped viewing my posts but started posting his own photos with friends and going to the beach etc. I asked him about the beach one as he was so badly sunburnt that his entire face was red. Later that night, he messaged me at 11.45 pm (the same generic hello how are you which he always does even when we had met earlier twice that day) but I was already asleep.
I responded to him in the morning when I woke up as that's when I saw his message from last night but he didn't reply back.

Today, again he was not talking to me and I caught him looking at me hence I waved at him, then he waved back and became normal.
Though, I feel he's actually annoyed at me and is trying to be civil when I act friendly.

I dont get it. What is this kind of behaviour and what does he want? I already told him that if he wanted to meet up after work, he can just tell me. But he never did.
Is this guy TOXIC?
3 Opinion