Physical fights with ex-partners/bulls

I am wondering how common this is. Personally, I once got into a fight at a party with a guy who had fucked my girlfriend before we were a couple, but that's the only time that's happened to me, and I don't know anyone else personally that has happened to.

Has anyone else here ever gotten into a physical fight with your wife/girlfriend's ex-sexual partner or bull? It could have been a serious fight or even just an athletic contest for your girl's enjoyment too. In my case it was serious, but I'm curious about the other type as well.
 
back in the craigslist days we found a guy who became semi regular. after about a year she said he was getting weird and didn’t want see him anymore. He then started showing up at places when we were out. turns out he started stalking us through FB. We never used our real names or played at home. TURNS OUT HE LIED AND WASNT SINGLE AND LIED ABOUT HIS WHOKE LIFE TO US. After we figured out how he was finding us i found out who he really was through FB.
He then showed up at a bar where we were watching with our friends I landed up hurting him pretty bad (two broken ribs, broken nose, and broken orbital socket) and told him as they took him away that if i ever saw him again i would infirm his wife of his actions.
All charges were dropped against me.