That popular belief comes from men stereotypically advising women to date uglier men or men they’re not attracted to in order to secure relationships, which is terrible advice. Great for the ugly men temporarily but a death bedroom in the future when no amount of sweetness make her want to bone that guy because she’s forcing her human nature. I always found it scary and embarrassing how many guys are ok with not being truly desired on their own by their lovers, as if the women’s physical and sexual interest didn’t matter or that they should suppress theirs so we don’t suppress ours. That advice leads to so many men landing in dead bedroom sooner rather than later and they act surprised when it happens when so many men perpetuate this stuff. Imagine telling a guy the same advice and most men would rather cut their left nut.