Relationships are a sociological fabrication. Like all other animals, humans are driven to procreate.Doesn't matter whether or not they were actually raped. The point is the instances where women later decide (whether it be 5 minutes later or 5 months later) that they didn't 'want' the sex. There is no way to prove in court whether or not consent was given (unless you literally have a recorded video, which is unlikely), yet it would then fall upon the male to prove that they had consent.
Yet you conveniently don't give a definition of 'consent'. So tell me; what is consent? Is it a particular question and particular answer only? "Would you like to have sex?" answered with "Yes, I would like to have sex." and nothing else? Would it be considered consent to just nod their head in answer? Would it be considered consent if they were the one that made advances and took off their clothing first?
You don't just get to go waltzing around whining about other people's definitions of consent when you yourself are not presenting one nor giving reasoning as to why yours would be correct. Pretty much ALL definitions of 'consent' could be abused to so called allow 'legal rape', which is why consent is such a hot button topic. But when you just nitpick other people's definitions without presenting your own you are just being unfair and dishonest.
Because compared to a long term relationship, on average, mere hook-ups are far and away more shallow. Most often they are conduits for sex, not a relationship of any kind.