why did he follow then unfollow?

[Tiera S]

Ok so my friend sent me a pic of my crush insta. so i followed him and then he accepted then like 5 seconds later he un followed me.. idk he follows her and my friends but not me. i still follow him but i don't know if i should un follow or just keep following him. Not going to lie i was happy and shocked when he followed me then he just un followed me. also my account wasnt on private (so i could get some like lame i know) then i put it back on private. thanks if you answred if u have a instagram follow me ill follow back (i just dont follow those fake account that are like get 100 followers overnight like. no.) @__tiera13_
@kesha he follows back he even followed my friends! :? but idc i dont really like him anymore.

[Kesha]

Ppl follow others thrn unfollow so that they can have a lot of followers