KT is not into Sex. He is into humilation and degradation, and let's not pretend you didn't know that already. He wants to see how far girls will go to degrade themselves, and then ask them why they did that. It almost always comes down to a Daddy betrayal in the past for the girls anyway, and Khan can leverage that pretty well.

Personally, I think a girl who willingly submits to sexual deviance is a huge turn on. Rape does nothing at all for me.