Someone who will want you back after they see that you are happy without them. They will also admit they were bad to make you feel better. He might admit that he's changed.

A guy who you once liked/loved but decided you were better off without once he cheated on you with a 14 year old. and lied about being in the military. Beware, they are notorious for pretending to change so that you will take them back, but in reality, they are the same disgusting, lying, cheating, pig that you broke up with in the first place.

Men or immature boys who can't decide the difference between booty calls or a real relationship. They are like the lost boys from Peter Pan who choose to never grow up!

a duche fuck who probably told you that he loved you and never wanted to let you go and then decided that you were too negative for him, even though he was the one bitching and whinning all the time about how he broke his leg and couldn't do anything, then broke up with you to go out with a whore he probably slept with in college, and broke up with you through a fucking email while you were on vacation because he was too much of a pussy to do it in person.

a guy you once dated, but now either:
a. want dead
b. are "friends" with
c. hook up with every once in a while
or
d. have erased all traces that they ever existed in your life.

A loser who you dated in the past in which you can now look back and only regret because you were way better than him anyway.

The boy you know you shouldn't like..
But you still do