I am the same it is because you have a crush on them.
They think it will make them try harder and pay more attention to them.
Yes most people if thier crush is with someone else they make themselves look rlly good and go flirt with other guys and make him jelous, guys want what they can't have
If you guys have ALOT in common or you guys hang out ALOT or you guys have the same personality or you have all the things he wants in a crush
its nature
Make him jealous and try to flirt with other guys to make him so mad so that he might have an interest and talk to you more
realashinship guys love there crush
some of them,especially the guys who had a crush on her first. maybe those are the guys who's in for it.
tell her to back off a little and steal the guys including your crush
Maybe, if they think you're hot.
Mostly if it's girls :)
he starts winking at her noticing her complimenting her hair