Is this too controversial for teenage/young adult audience and would you read it?

It's certainly not too controversial. When "The Catcher in the Rye" came out, all of the adults FLIPPED cause they didn't think teenagers were supposed to think and act like Holden Caulfield thought and acted... but they did! Now it's one of the most important works of American literature. The fact that the women in your story are s doesn't matter. "Running With Scissors" and "The Perks of Being a Wallflower" both featured gay main characters, and they were huge throughout both teen and adult audiences alike. The specific genre of your story (aka asins with romance, for lack of better terms lol) doesn't necessarily interest me, but that doesn't mean you can't write a good book of that genre. Don't worry about the controversy. The world would have remained the same forever without a little controversy! I'm of the opinion that the whole point of literature is to push ons. That's what all the great books of the years have ever done. Orwell and Twain certainly weren't accepted by everybody, I can tell you that right now.