She seemed upset and I thought, though was probably mistaken, that she looked at me with some appeal for help in her eyes.I evaluated her visually in ... fraction of a second in a way that any straight male looking at a female would do. I was taken with her. She was half-caste - not more than five feet - nice shoulder length frizzy hair - and apart from that just legs, ass and tits. Her black stockings and short skirt made my cock start to go hard and her shirt was thin - allowing me to see her. "Maybe this will help even more, Nathan," she said, smiling up at me as I masturbated standing there. She pulled the towel off and dropped it on the concrete, then dropped her feet off the lounge chair onto the patio showing me her wide-open pussy.It was shaved clean, plump and pink with a dewy slit along the middle which she began rubbing with her finger up and down."Cum, Nathan, see if you can get it right here, right on my pussy."I moved a little closer, I'd never really used my dick for. He drops his legs and decides to move to another machine.One our way over to the next exercise he gives me a playful hip check and a smile. The machine he has chosen for his next feat of strength works the inside of the thighs. He sits down and puts his legs in place. As he chooses his weight his legs are spread wide and my eyes dance up the inside of his legs across his crotch and back to the other side. He does a few sets and asks me if I would like to try. As I sit down he reaches across. He had his hands under my legs and was pulling into me. His tongue was so long and pointed if you have never had a tongue like this you will never forget it. He lifted me onto my knees and I looked under me and had a perfect view of his rock hard dick. I couldn't help it as I reached back and touched a dick for the first time.I slid my fingers around the tip and felt the wetness of his precum. I think he got the hint and told me to turn around and get on my stomach. He said it so forceful that.