**TLDR skip to bottom**
It'd be interesting to see what OP has to say about this. I do have some ideas though.
An unattractive woman is still after all a woman. Women desire to be with someone who they are not only attracted to but also someone who doesn't want to accept mediocrity for himself, will fight to achieve more in life and who will protect her. Someone she can look up to and desire with all she has. Even if she hasn't been with said man, she knows in her mind who this man is.
For example, the ladies that had caught "Bieber Fever" really bad in the late 2000s. Not all of them were women certain men would do with someone else's junk! lol. That aside, it didn't change women finding a certain 'type' of man if you will desirable. If other women want to be with this guy and he looks like he could whoop some a$$ and knows how to carve some agency of his own over the natural world, this registers with women. HARD. And if he turns his eye to them, they'll not fast forget it.
Think about an average guy. The phrases, "I'll take one for the team.", or perhaps "Hey, you don't have to be ashamed, I've had 'beer goggles' too.", or maybe a not so common, subtle and sincere "I like em' bigger." If this type of guy is with an HB 4 even as a plate, this 4 is going to regard him as her best shot. Other guys just can't come close.
The arguable GOAT Tom Leykis compared men and s3x to taking a p1ss. "We don't care if it's Sadam's gold overlayed toilet with silk wipes, a porta john or a sketchy gas station on the 4-oh-5, if you need to go you need to go." His point was "a man will do what he has to if he has to." This includes an occasional lady who might not be someone you're really into. But if she keeps pawing on you and kissing you and rubbing certain places, I mean... Biology is biology.
**TLDR!**
Long and short of it is men are men and women are women. There are exceptions to many things, but generally speaking, even an ugly, overweight or otherwise unattractive woman will still meet or have a casual encounter with a man she sees as "the man I really wish I can have and since I've been with one, that means I have a chance. I'm going to keep holding on to a man like him coming along."
