Awkward situation

La

So...I there is this guy in my class I had been crushing on for about 2 months now and got to know him a little bit. However, In my view he’s been acting strange lately by not greeting me before class anymore and seem a bit self-occupied even though I didn’t do anything. Don’t know if its a family stuff or what but I’m too nervous to ask. I will really appreciate your thoughts of the situation.