Rewriting the Rules

I know the rules. I repeat them endlessly in my head. But damn it, I can't stay away. Can't stop thinking about it. About her.She's perfect. Beautiful. Exceptional in every way.When in the world did she grow up?No! I refuse to touch her. I won't do it.But I did. Just once. And now. I want more. So much more. Once I've set my mind to something, nobody can stop me.Not even him. Screw him.He's just my best friend.She's just his little sister.Rules are meant to be bent.Broken. Hell, rewritten. How bad can it be?