@snood,
You are right, the ambiguity surrounding whether consent was given, in a he-said she-said situation, with no other evidence given to support a rape charge, would create a major problem for the D.A. in trying a case.
That's why most of the cases never get to court. Rape is a relatively easy crime to get away with, particularly date rape.
When the rape is reported to the police, they decide whether the situation described, and the evidence to support it, constitutes a rape charge. A great deal of the time, nothing further happens with the case. Either they don't believe the woman, or they believe her but know her version of events can't be substantiated. A good deal of the time, the rape kit isn't even examined. That means they don't even collect DNA to enter into a data base. So, a large percentage of the time, absolutely nothing happens after a woman reports a rape.
That's the problem for a woman who has actually been raped but where there is no evidence of severe bruising, or tearing because the man simply physically overpowered her. If the couple has been fooling around and they have been engaging in foreplay, and the woman then indicates she does not want to have intercourse, and the man simply ignores her, suddenly gets on top of her and penetrates her anyway, she has been raped. That's not that hard for a large man
to do to a woman who is much smaller than he is. But how can the woman, or the D.A., support her claim of rape? They often may not be able to support it, so no charges are ever brought. A good of the time women don't even report the rape because they feel they won't be believed.
It is fairly easy to get away with raping a woman. All the statistics indicate that.