Did your ex know about the new GF? it's a pretty new R right? I am pretty sure it doesn't have to do with the movie. It has to do with your new GF.
I was thinking along these lines, too. I'm sorry if I missed this, are you fully divorced yet?
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.