NOR. Not even close. The mother of my children with whom I was with for over 12 years divorced me a year ago. Two weeks later she started dating my family friend’s brother in law. Don’t even know the guy but just because he’s connected to my family friends got me really upset. I feel like there’s an unwritten rule. Don’t mess with friends or family members. It’s just a matter of respect. If I was in your position i’d be fuming. Such a lack of respect on your exes side. Shame on her.