It tracks, actually. Men tend to pick a sexual orientation and be disgusted by the other sexual orientation[0]. Women are a lot more hetero- (and homo-) flexible.
[0] It works both ways! A guy once told me and my wife that we made a cute couple despite how disgusting heterosexuality really was. And I was like... okay, thanks?
Not completely true. Most men are not disgusted by a lesbian couple. I don’t mean just men that fetishize about it. But many are disgusted or at least discomforted by seeing gay men being romantic.
Thought experiment: if a wife in a heterosexual marriage told her husband that she previously had relationships with women, I know many men (including me) who would just shrug and move on and not really think about it.
On the other hand, a man couldn’t just tell his wife most of the time that he slept with men before
[0] It works both ways! A guy once told me and my wife that we made a cute couple despite how disgusting heterosexuality really was. And I was like... okay, thanks?