Man, when I was 20 I have a girl that did all that...the crying (becuase she was so happy) was a little freaky, but that is what this chick was, straight freak. She used to yell "Hurt me!" while I was banging her, she used to draw blood on my back from her nails, she used to scream at the top of her lungs (with me hiding my face becuase I was laughing at her). One thing not on that list, she was always really, really wet.
And at 20, I really didn't know what I had. I would pay big to have about a month of that back right now.
Bluesman