First off define ugly. Average has gotten collapsed into ugly b/c media makes everybody super shallow and critical of peoples' looks these days. Me and @Draje have had this conversation.
Otherwise attraction can be something totally different from looking the part.
But people sometimes don't want to admit to being attracted to someone who is considered unattractive. Meanwhile somebody's personality can make me wanna fukk em if we're being real. And I've run into some really attractive people that looked good but did nothing for me on a visceral level.
It's the weirdest shyt how somebody can look good on paper and ur p*ssy be like "nope" when u get to know them. It isn't like that all the time but it's happened enough for me to realize that attraction isn't as straight forward as "he looks good, thus I want him."
It's about the way they make u feel.
(Outside of extremes of course)
I'm gorgeous though