@Katelove while you've expressed your point incredibly well (SLAY QUEEN!!), I'd say don't limit everything to just a teenage audience. I'm personally 28 and I thoroughly enjoy reading shounen ai BL stories solely because I get to vicariously live these high school first love emotions that I couldn't live on my own, hence why I also watch coming of age TV shows, movies or read same genre books. (spoiler: homophobia is really a thing that fully prevents you from exploring your sexuality in most countries). And while I do agree that it is wrong for adults to sexualise teenage characters, I am all for romanticising them responsibly (after all, who doesn't like seeing two people overcome their irrational stereotype based fear and grow to the point they accept themselves and confess their mutual feelings for each other).