Whaddup Sallie- I had this flirting dynamic w/ my WAW a few times during this past year and I enjoyed it as it seems you are. I however attached expectations to it and thought it was a major sign that we were getting back on the right track.
It didn't turn out to be so what I would like to say is feel free to flirt and enjoy it and perhaps in your case it will lead to bigger and better things. But also keep your expectations in check because it can be a big let down if you attach significant meaning to it.
