Vance, it doesn't sound like his Ex knew beforehand that her significant other was going to approach Starchild. So, the comment about, "The fact that your ex would allow him to do something like that..." is not an issue here. I think it was to Starchild's Ex's credit that they left the place "in the blink of an eye". It shows that she didn't want any confrontation between the two men.
I think Coolbreeze’s response is dead-on. It’s the best approach to me. However, I wouldn't want or tell my now significant other to approach my Ex, but if my Ex had been an azzhole or a cornball in our relationship and my significant other approached him in the way that Starchild’s Ex’s SO did and nothing happened, I stand by what I said in my first response.
Actually, most confrontations with Exs don't fall into the category of being fatal or actual fisticuffs. If my Ex's now partner approached me, so long as she doesn't put her hands on me, and depending on the situation, I'd give her a nice response or look at her like she was crazy. Either way, I would continue enjoying my date. It ain't that serious.
I believe this is the approach most people take. True, there are some thugs out there who’d take it to the next level but for the most part, that’s not what happens. The guy’s comment to Starchild wasn’t aggressive so there really was no room for Starchild to get aggressive with him.
As a matter of fact, it sounds like Starchild was taken aback/confused by the man’s comment and had to regain his composure somewhat to figure out what was going on. The guy wanted to throw Starchild off balance without the situation becoming volatile.
Maybe Starchild will give us a little more details about the breakup?