The feminist idea is that men are slaves to their lust and prey on women, and this faulty premise has been codified into law--though granted, Bill Clinton qualifies in this category. Not all men do, though.
Men can say No, too. It's his body and his sperm and if he doesn't want any trouble with it, he had best keep it to himself. As this article shows, even using a condom is no help.
Here's a little secret: in this day and age, a guy that says "No" would definitely either be a challenge or a relief to a young woman.
Actually, I think most would see it as an insult. Women can't handle being told "no".