I couldn't even tell my girlfriend wanted to have sex with me. She came over and sat on my bed with legs crossed and swinging one. Her friend was waiting in the car that was still running.
I stood in front of her just talking away. She got up after five minutes pissed.
That night, I called her and she refused to talk to me until the next night. She asked why I didn't do anything or pick up on her clues. I asked what she was talking about. "I wanted you to F**k me" she said pissed.
When we first started going out, I told her I was a virgin (recurring theme) and I would not be able to tell what any clues are and if she "wanted me", "Take Me", even if that means damn near raping me.
Girls, some guys just are not programmed to pick up on Subtle Hinting and have to be Told flat out, what it is you want.