Questions: Guy's Behavior

I had an acquaintance who I know finds me physically attractive. He would subtly stare and look my way when I’m around - this has been going on for half a year now. Good news is that we got recently acquainted and I believe he might be pass the attraction stage to crush phase?

we had a nice 1:1 catch-up where he displayed all the signs of attraction (very animated (way more than his usual self), quite the gentleman) and then he couldn’t stop smiling when he saw me around. Trying to spend more time w me / asking if I was going to joint Events

And then the weekend passed and when I was around him this week, he seemed on-edge, purposely passing by my side but walking really fast like swooshing pass me. His natural demeanour is cool call and collected so I obviously noticed

is this a sign he is not comfortable around me (for whatever reasons) or that he just does not know what to do with his feelings for me?

and if it’s because he doesn’t know what to do with feelings, what can I do to make it easier for both of us? I notice guys do get very uncomfortable around me and even though I am very certain they are at least physically attracted to me, it still makes me feel like an awkward person if someone is avoiding me.