She was friendly, but mentioned that it felt weird that the other girls in our group of freinds were hosting the party.
It could have been that the party kind of hit her that things were really going to change for you as well as for her. The fact other women were being hostess probably helped drive it home. Sometimes women send silent messages to other women. Were any of those girls single?
None of the other women were single. However, one of our married friends came and shared a barstool with me during the fights. That would be totally normal behavior for us. But Apparently on this night, W was upset about that. She expressed to another friend that it was disrespectful. In times past, W would not have batted an eye.
W has also questioned people in our group about single women being present at out get togethers.
I am not remotely trying to guess why she is even concerned. Perhaps she's jealous. Perhaps she is remorseful. Perhaps she is looking for an excuse to do the same. I really don't know and probably never will.
I do know that if I was the one moving on, with the same feelings that my W expresses to have, I wouldn't have attended the Birthday party in the first place. I definitely would not have been hugging on her or rubbing her arm. plus, why on Earth would I get upset that other men were showing her attention. I would have already moved on...right?...EXACTLY!