Second Course Addict

A guy who always goes after his best buddies exes.

Guy: Kelly just broke up with me.
Guy2: Aww dude, im sorry. Watch out for Chris, he's a total Second Course Addict.
Guy: He wouldn't do that to me, Im his best bud.
Guy2: I used to be his best bud too, til he did it to me and my entire group of friends.