"In either case how is the penalty apportioned? After all, it is a crime, both parties are responsible, therefore both parties must be punished."


Yes, both parties are responsible in their own way. Had the girl not behaved as she did what followed would most probably never have happened. Therefore she instigated that set of circumstances happening, whether she wants to believe that, or not.

However, that does not excuse the boy at all.

If you are willing to start the ball rolling, then you have to be willing to possibly have to roll with it. You do not have to start that ball at all, of course, because you are free to take that decision from the beginning. It is vital to be aware of the consequences of your actions, and we have stopped telling young women about that, instead telling them they have every right in the world to behave as appallingly as they so choose.

The girl in your story led him on, David, in a quite outrageous way. I would hardly say she was innocent, would you?   

You feel that women should have no responsibility whatsoever, no matter what they've done to possibly create the situation above in the first place. You possibly may feel that they shouldn't even be warned never to do that again, because it is their 'right' to do exactly that, over and over, should they want.

I don't feel that way at all.   

You are about Personal Irresponsibility for women, but not for men.
I am about Personal Responsibility for both men and women.

I believe that both were wrong, because without the first behaviour, the second may never have happened. But that does not let the man off the hook, because he should have controlled himself and walked away. He chose not to, so therefore he is accountable for the punishment he knows will happen to him.

We differ and should agree to differ, as this is getting boring and going absolutely nowhere.