ChildlikeFaith, I too needed proof last night and I got it! If I hadn't gone to check on my A (ex-A hopefully) I would probably be spending the weekend with him, like last weekend. I'm trying to move on and get as far away from this relationship as I can. So I completely agree with Gypsy and Denny, the more information you have and the more proof you have, the better you are able to make an informed decision.
Denny,
The next thing for me was hiring a PI as well. If I can't stay away this time that will most likely be my next step. All the proof I can get until I can make the decision that feels right to me.