An insensitive jerk who will lead you on but never really cares about you.
Selfish, annoying, deceiving, a player.
He acts like he loves you so he can find out how to mess with your head, that way he can get you to love him whenever he's single.
girl 1: Guess what, I'm dating Gage!
girl 2: He just dumped me yesterday, how did he move on already?
girl 3: That's just how he is. Gage loves playing with girls' hearts.