Should I follow him on twitter again?

[Christy]

I followed my before for a month but he didn't follow me back. (He still followed other people after I did but not me)
So I unfollowed him since last month.

We don't have classes together anymore this semester.

Should I follow him on twitter again or leave him alone?

P.S. We are friends but not close!

[Joel]

well if i were you i wouldn't really overreact it is just a site nothing really it doesn't mean he doesn't find you uninteresting or boring and you guys are still friends maybe he just follows famous people or just entertainment, in end if it bothers you enough ask him about it but in a subtle way of course.