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He wants to test drive you like the others.
He's predending to be a buyer
and they are thinking they might make The Sale
but he's just satisfying his dick.
The End - there's really no more to this guy, even though he talks a most convincing game.
You are the one that got away, so he'll keep plugging until there are dire consequences to him for trying. Better install some of these, e. g. muscle bound boyfriend (or friend that would pose as such) or group of friends or classmates (e. g. dance class) where they all know what a jerk he is, so will defend you and insult him away.1