As I live, fidelity has become less of a virtue. Lack of fidelity is a symptom.
I've posted it many times: "The Eternal Triangle" by Loz Greene http://www.skyscript.co.uk/lgreene.html
Fidelity to me is simply a matter of health and safety - no more, no less. I can't have my health or safety secretly at risk in this way.
Judging a man or woman by what they do with their sexual organs has always been beneath me. And basic general complaints about the act itself makes me think the "victim" is really basic. Listening or reading such is just entertainment.
Today, I could give a rat's ass. Got more things I'm interested in than dick travel stories.