I do think "rape" should have a broader definition, absolutely. But I don't question why a newspaper doesn't use the word "rape" for something that isn't legally rape.
And "who knows what the actual facts are" because this appears to be a third-hand story cobbled together by the DM from the Internet. I'm not claiming at all that the victim is lying. I am suggesting, based on the way the story was reported, that the DM hasn't spoken to the victim, or to the police, or to anyone even remotely involved with the case, and that they've published the story to further their own agenda (chiefly "we haven't printed photos of Angelina Jolie for a while" plus "let's have a jolly good laugh at the idea of men being victims of sexual assault by women). I buy into the "We believe you" campaign, but not to a "We believe the Daily Mail" campaign. I don't disbelieve the fundamentals here and am more than happy to put forward a point of view in principle, but I am not getting into a "well, the article says specifically that this, this and this happened" discussio over the details of a Daily Mail story.