Originally Posted by SeventhCrow
Welcome to the boards.
It's up to you to figure out the source of your discomfort. What, exactly caused the discomfort? Is it that you feel you lost something? Is it that you feel she's gained something that you haven't?
Bingo!! Gotta figure out why you're uncomfortable now. Was there something in particular about this partner? You mentioned that you weren't sure if it was due to the fact that she's been having all the fun and you haven't. Do you think that's it but you don't want to say that because it just seems unfair to you?
The first time that my wife was with another guy I had a few reservations and wasn't thrilled with it at first. That wasn't very fair of me though seeing as I'd had about 10 years of experiences with other women. After I worked through things on my own, he and I became very good friends and developed a great relationship. I even grew to enjoy when he would come over, because I loved that my wife was enjoying herself so much.
I'll also get back on my Communication soap box. Talk, talk, talk!! They're not always pleasant conversations, but they must be had.
Good luck and let us know how it works out.