And there you go, SP... trying to prove how "right" you are once again.
I have revised my thinking on this OM / party thing. He got invited by other guests. He asked your W to go with him. So here is a thought... Why don't you just tell the other guests that their business is not welcome because they invited OM? Tell them that their choice of guests is unacceptable to you and you forbid them to have any association with them on YOUR property.
What? You aren't going to do that? Why not? It is YOUR property! YOURS! YOURS!
Oh wait. It isn't yours. It really belongs to your mom. But it is YOURS when it is convenient and someone elses when it is more convenient.
You know what? I own a house... with the bank... and my STBXW! I live here alone with my dog and a cat. Did you know that, even though she abandoned the home and saddled me with the payments, that I can not change the locks? That she is legally allowed to have unfettered access to the house? Yup. Bummer, huh?
It is just stuff. It is the business end of divorce. Who cares if you think it is fair or not? You have too much emotion tied up into "stuff". The court can decide.
Want to know what my attorney fees are right now? Zero. Why? Because I was able to separate emotions from property. Because, regardless of my feelings, she was going to get half. Then again, so am I.
Distance yourself, buddy.
“Things turn out best for the people who make the best out of the way things turn out” ― Art Linkletter