Hmm - mine was girl cheated on me - didn't do anything hardcore, but I didn't let the guy ( still dating him now ) even so much as attempt to man up, whether it be in playing in the orchestra or drag racing ( idiot had an accord and thought it was faster than my '72 Charger with a 440 at the time... )

Went on to date an awesome softball chick, who is now part of the Hall Of Fame in Georgetown University in DC ( we broke up on good terms, still great friends )

Can't say I ever had a really bad break up...