He acting strange now. My guy friend?

[Anonymous]

He used to be very comfortable around me now he acts very weird. Like almost avoiding me.

And I'm not attracted to him at all by the way

[MrCommodore]

I'd say he started to feel an attraction toward you, maybe realised its unrequited and is creating space.

It could also be that you did something to upset him, perhaps indirectly.

[SiberFox]

Probably because he realised he's attracted to you, or he learned something about you that puts him off.