Seems a family common issue, and one that has had various threads devoted to it.
I for one, discovered the joys of punting just over year ago, and have used it to go through my fetish / kink list, things `i could never get up to with er indoors.
But the reason was like so many, a desert at home , I sed to get worked up about it, but the punting seems to have disputed that frustration nicely.
I don't feel guilty, as that would detract from he whole business, but equally I wouldn't want the OH to find out and be upset, as she no doubt would be, other aspects of the married life seem to be OK.
But hey, no doubt we have all had other secrets throughout life, so this is just another one.
Interestingly, as women seem to go off of the sex side of a relationship, they still seem to have an opinion, and its generally what rotter a bloke is for working some other female!
But this issue is obviously something we are all concerned about, otherwise the threads wouldn't keep appearing, and us posting!