no, she is not "dense" and she is not "mature". this is just what you call a slut. it doesn't matter if or how she rationalizes it, she is putting herself in a situation for sex.
@cksn Can you get yourself outta here? I'm getting frustrated seeing your stuff in every god damn chapter. Your toxic attitude is absolutely disturbing.
That poor guy... I think he honestly wanted to protect her because he thought she's naive about boys. Too bad him thinking of her as cute ruined it at the end; it made his motives seem less pure.