Thoughts?
My first one is that you are calling this a mistake. Where is the mistake in this? Her not telling you that she turned down a come on?
I don't know either of you but I see nothing in your posts that suggest you have been living with a woman who is given to carrying on behind your back and lieing to you. You made many assumptions about what must have brought this on. I won't pretend to know a thing about your company and how it handles their events. I will say, I can't imagine any such gathering where people would be so carefully monitored that there could be no contact or opportunity to interact.
I wonder if the more you think on this, you create an atmosphere that feeds into your worries. There could not have been contact, there must have been drinking, they must have said things before to lead up to this. You are really creating all this and building on it to get yourself worked up.
We can do scenarios, here is one. Your wife steps out of her room after a shower, smelling fresh, rejuvenated and smiling. The guy passing, yeah she knows him but boy does he reek from the bar, how does a man drink that much, oh no, he is really looking at her like that. Yes, he is and he says, "Hey baby, wanna wrestle?" Ooh he is drunk and will regret that tomorrow, ummm no; so she slides back into the room and slams the door. Oh shit, how does she explain this one to her husband, he could end this guy's career for being stupid, better to just ignore this as drunken silliness.
Let go of the scene creating. If you want to know, ask your wife and don't add things to it.
The Rose