Question from a guy writing a book with a lesbian protagonist: I need advice on what to do and what not to do.

I don't mean to impose, I get if you don't want guys posting here, and if it feels like I am, feel free to remove this post.

Anyway, I am currently working on my first novel, a modern gothic mystery/horror about a trio of teens, consisting of the captain of the school football team, Ella, and her girlfriend and best friend, uncovering the mystery of a 700-year-old vampire who has come to the city and lusts after Ella, which is meant to be a metaphor for how some particularly unsavory men fetishize lesbians, as he wants to break her. She gets the upper hand on him in the end when she tricks him into staying up past his bedtime and causes him to burn to death in the sun (so both members of the main couple make it to the end just fine, no bury your gays).

Anyway, I have been doing plenty of research on lesbian experiences for the book (turns out, Hayley Kiyoko is actually a really great singer and I became a fan, lol). In general, I have found that I prefer writing women, both as heroes and villains, unless the book requires a male character (which this book definitely does to be the villain), and since I'm interested in women it's therefore easier writing from the perspective of someone who is, hence why I have written several lesbian characters before in a few short stories. But I'm scared that I might turn off lesbian readers because, well, straight dudes have a long history of fetishizing and objectifying lesbian relationships, which is something I definitely don't want to do here.

So, if anyone has any advice on how and how not to write the protagonist and her relationship, that would be really cool.