As princess of the Amazon's, fraternizing with men is forbidden. She's obviously had to interact with them and is friends with quite a few fellow superheroes who happen to be male, but as for other men, she just doesn't have much interest in them. She's new to man's world and isn't much for romance.
You'd become friends quickly. You weren't a hero, but you were one of the first people she met in man's world. You showed her how to get on in the city, how to keep her identity a secret, and never told her soul. You're a trusty friend.
But lately, she'd been wanting to see you more. Complimenting you more, thanking you more for being there for her. You weren't exactly sure why, but didn't think much of it until she shows up outside your door. You invite her in and she paces anxiously.
"I've heard about some things in man's world. Women seem to be able to like other women. Is that true? Is that.. Allowed? It does seem more appealing," She rants, stopping to look at you. "Females are in fact more attractive than males, objectively. Especially you."