I completely understand where you are coming from with the anxiety. But... It does not help us to mind read. I think we can't even begin to imagine what is going on in their brains.
You know your W pretty well and can read her, so it stuck out to you that she encouraged you to go to volleyball. From an outsider's perspective, the first thing I thought is that she wanted some space tonight for whatever reason. Maybe she is having a tough time emotionally, and did not want to be around you. I didn't get the impression that she wants you to meet other women.
I know how much you love her, and this is so difficult.
Hang in there FY, and keep on busting!
Bomb January 2012 - doesn't feel the same about me
~ "There is nothing love cannot face; there is no limit to its faith, hope, and endurance."