I was at a beautiful beach on Maui years ago, happened to turn my head and gaze, and saw two homosexuals engaged in a sex act not 15 or 20 feet from me.
I felt extremely nauseated. I certainly didn't "watch" them, nor did I want to even have the very short witness that I did.
I know what you mean.
A few months back, I was walking through a park here in Seattle (near the Woodland Park Zoo). While on the trail I saw a man giving another man a Lewinski. Lovely sight to behold...