You could say that, perhaps. Still, using this kind of thing you will be able to have sex with girls who aren't attracted to you at all (unless there is something else that overrides this, such as what's going on with Callie). As long as there is the slightest chance that they could have made themselves accept, it's theoretically possible to force them to do so. Not that I've really thought about this in the way you're doing, so I might change my mind on this. Sometimes a concept can be crystal clear in my mind, but I struggle to explain it to others or even myself.