Not really a sin I guess. I'm a single w, female. 21. I just got out of a long term relationship with my first sexual partner. I wanted to of there's something more or better for me. So a couple weeks ago I met a guy at a corner store. No one special, kinda right place right time ( for him, hehe). I was flirting with him hard, and then I said fuck it, time to live my life. And we started walking around and talking, and we ended up in the back alley of the store. Nice and dark, about 9pm. Next thing I knew, I was on my knees. His hand on my head shoving his surprisingly huge cock down my throat. I didn't know what to do really, but he didn't seem to mind. The he grabbed me, pulled me up and bent me over and old office desk there, and proceeded to rub my ass. I began to find myself worried I'd get pregnant and before I knew it his big dick was slding up my ass. At first I tightened up as I've inly done it a few times. But that seemed to get him harder as I feel his spit dripping down my ass. Then he holds me down and goes deeper and hard. I can feel myself relaxing and submitting to him more. Then he grabs my shoulders and pushes a couple of theusts deep inside me. I can feel his got cum shooting inside my asshole as his cock switches over and over balls deep in me. Then as he pulls out I lay bent over this broken desk before grabbing my underwear and as I pull them up I start to look around and he's nowhere to be found. I have to say if this ever happens again. I'm definitely gonna want it. Best night ever.