To experience a better life after a relationship has taken its time on you.

To be better off without your ex significant other

Basically rubbing it in your ex's face that you're "the shit" and they're not.

To stunt or show off on your ex-relationship with a significant person, that you're doing better.

Showing your ex that "there are more fish in the sea".

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)