Stay where you are, with the young girl

You decide to stay where you are, keeping your eyes on the young girl halfway down the stairs. She can't be older than twenty, probably eighteen or ninteen. She's Asian, but I can't tell what nationality she could be specifically. She's got straight black hair almost down to her shoulders and dark brown eyes that meet mine a few times when I'm trying to look her up and down.

The girl is dressed in tight black jeans and a cute little grey t-shirt. She's got a decently sized chest and actually has a pretty nice butt, although it's not as big as I like them to be. Still, she was turning me on... and I slowly moved my hand down and grabbed my cock through my pants. Since she was facing me, I was pretty sure she noticed what I was doing as I started rubbing the bulge in my pants up and down.