I have been in a situation where the guy only had one orgasam and was dissapointed in himself because he was too preoccupied with what his wife was doing in the other room (it was his first time swinging).
At the time I almost feel a bit like maybe I wasn't doing anything for him, or somehow I was to blame. But afterwards I understood the situation and have learned that it isn't always about me (

I know I was shocked too...not about me!!)
I have can now accept that you don't always have to have an orgasm to have fun....but it sure does help