Fall (Larry Stylinson Fanfiction)
28 parts Complete MatureYou don't like your best friend's girlfriend.
Harry has had a crush on Louis for years. He's easy to talk to, supersmart, and totally gets him. Lately it even seems like he's paying extra attention to him. Everything would be perfect except for two things: Louis is Eleanor's boyfriend, and Louis is Harry's best friend.
Harry forces himself to avoid Louis and tries to convince himself not to like him. He feels so guilty for wanting him, and the last thing he wants is to hurt his best friend. But when he's thrown together with Louis one night, something happens. It's wonderful...and awful.
Harry is torn apart by guilt, but what he feels is nothing short of addiction, and he can't stop himself from wanting more...
In dependence on "the unwritten rule"