*****Backstory – sex starts later*******
My current girlfriend and I were seeing each other casually for a while before making things more serious. For the sake of the story I’ll call her Marie. During that time, we used to attend bar trivia a lot with her close friend, let’s call her Arielle. Marie is short and has a petite, muscular frame, green eyes, and brown hair. Arielle is 5’8” and blonde with blue eyes, great set of tits and a naturally shapely frame. I wouldn’t call her slender, but I wouldn’t call her thick either. She just had a great body. Now, Arielle always seemed to be looking at me when she thought I wouldn’t notice. Marie noticed a few times and thought it was strange. It turns out, Arielle is quite promiscuous and had a habit of, what Marie though, pursuing the men that she was interested in. I was on guard, but also thought maybe I could use this knowledge to my advantage.