Wish I could just let go
A few months ago me and my wife went to a party together. She was a big hit, and all of the other wives/gfs loved her and she soon disappeared leaving me alone in the corner.
After 2 hours of ignoring me she came over, slightly drunk and with a sly smile and said that she wanted me and her to join two of her friends and another man upstairs.
We had talked about threesomes before and its something that I can't do, the thought of someone else touching her like that really bothers me. I told her that I couldn't do that. She told me to be a man, then she handed me her wedding rings and said that it was something she was doing with or without me. I still couldn't and I begged her to leave with me. She walked away and the last I saw her that night was her arm in arm with them going into a room. Five minutes later she sent me a text telling me to leave and she would be home when she was ready.
She got home the next night and refused to talk and just laid in bed not letting me near her. The next day she was sobbing telling me how sorry she was and that she wants to be with me and only me.
That was almost four months ago, and now every time we try to have s** all I see is that man touching my wife and I lose all interest.
Why can't I let go, what's wrong with me???