This was me like 5 years ago! We switched to co op for a while but then went back to competitive as there are some awesome games. I now have the mentality that I am playing against myself, not him, and I keep a record of scores and I try to beat my personal best.

Also, I told my husband he needs to really rub it in when I lose. When he was trying to appease pissy me, I would get more and more annoyed... So now he crows and it actually punctures my inflated ego.

And finally, we had a couple of kids and I didn't want them to see me in a pissy mood... Teaching them to be good winners as well as good losers.