So... I did a bit of "research" about the dude is "dating" my W.
They work together, I new that, but they also do very much the same thing, for sure they know each other for long long time, they went to same conferences, etc. At this point my situation doesn't look very good. This is not a guy she just met and she had an infatuation that could come and go. This is something that has been cooking for long time.
I am a bit desperate, I don't know how I can find the strength to move on.