Okay looking things up, faulty memory of mine. Looks like they got together via adultery on both of their parts. Divorce was irreconcilable differences. Schwarzenegger confirmed in 2012 that he had an affair with Brigitte while Maria Shriver was his girlfriend. She was married to Sly at the time. Brigitte confirmed the affair a year later. But the one that I remember is her allegedly cheating with football player Mark Gastinau. It did happen while both were married. Not sure if Brigitte was separated from Sly but they were still married when that affair started.
Damn. Gastinau kept the son he had with Brigitte, Killian a secret from his only daughter with his ex. In 2009 while at Ivana Trump's wedding Brigitte bumped into Gastinau's ex. She said that her son wanted to meet his half-sister. They did meet and it was emotional, she always wanted a brother. Killian only met his dad just prior to meeting his sister.
Okay, enough gossip from me.lol