You make him jealous
Try getting to know each other again.
He likes you.
Why not? You can still hang out after the year ends ^_^ Hmmm... Ok thanks. I think I might tell him at the end of the year. If he teases me, I will never have to see him again anyway.
figure out why he liked you in the first place
Certainly.
say hi
no.
They can i like this guy and my friend (who's best friends with him) told me this guy did and there's 3 year gap
If it keeps happening over & over again, the guys aren't the problem, you are. If you like a guy & he doesn't like you, smile, keep your head up, & move on. You should be happy & there are guys out there who can & will make you happy.
Why did you happen to switch from using the anonymous "you" to the personal "I" for the last few words? And yes.
yes
Talk to the guy and let him get to know you.