Well.....the only instance where this issue of consent seems ok to me is where you give consent, then the guy starts to do some off key/frightening stuff......you know how some people are. If its something you have not bargained for and because of that you want him to stop you should be able to say so. If he realises you are saying no......he should stop.

I dont know about the fifteen years part though, in some circumstances that would be heavyhanded IMO.

I do think there needs to be some more responsibility put on women when it comes to sex and consent though.