[MF] My anal birthday present

I'm going to be describing one of the hottest experiences of my life. But first, let me give a little backstory.

I met Sarah towards the beginning of the school year while orientation was still going on. The attraction between us was instant. Sarah was super adventurous as well as gorgeous. She was tall, had gorgeous tan skin with faint tanlines where her bathing suit had been, dirty blonde hair, and had an ass to kill for. It was that perfect athletic shape (closest example I can think of is Jessica Biel) and I worshipped that ass. As a rower for our school, she was probably one of the strongest girls I've ever met, but damn was she hot.

Since we were both adventurous we always did fun things like camping on the beach on school nights, driving down the coast with her chilling out of the sunroof, blaring Paul Simon. It was definitely a playful kind of love. Additionally, the sexual tension between us was insanely high. While sitting on the beach and looking at the sunset, she would sit on my lap and I'd feel myself getting hard as she would shift and slide around on my lap. When she would notice the bulge down there, resting between her cheeks, her face would get flushed and she would crack a little embarrassed smile. She hadn't been with any guys yet, and since she was brought up in a relatively religious household, she had to suppress her sexual desires most of her life. I was ecstatic to be the release valve for those desires.