Nah, there's plenty of teen sluts who want their teacher to bend them over the desk. That doesn't mean we let them do it.

And I've known plenty of thirteen year old boys that have no interest in sex and still think girls have cooties. Call them slow developers or whatever.

If you're only basing the law on the kid's mental state, I guess there can be mitigating circumstances, but you have to draw the line somewhere. Otherwise you have judges using their own subjective experience (like you) and the opinion of a child whose feelings may very well change when they get older.