He was in a state of arousal, which was barely contained by his shorts, and he was sure that she noticed. He saw her large nipples stiffen through her body hugging sports top, and had to turn away to hide his appreciation of her perfect breasts. What he would give to see them, and kiss them…

"Right I think that's done. Thanks a lot for your help, I owe you one". He didn't say that he'd gladly give her one, but it stuck in his mind. "I think I'll get changed now and if you like I'll run you home, after all it's getting late and dark too. I wouldn't like for you to be walking home alone"

"That would be great, thanks sir" She went off to shower and change. He stood in the staff showers and attempted to empty his mind of her, but images kept running through his mind. Her with her legs spread on the mats in the gym stretching, bending over to pick up her towel… He found that his hand had found its way to his cock, which was engorged with lust for her. He stroked it, imagining it was her hand. His movements got faster and he lost himself, until the door of the shower cubicle opened and she stood there watching him wank himself.

He was shocked, and aroused all at once, but she put her finger to his lips to silence him. "Ssshh! You don't have to say anything. Its ok I won't tell. We both know how I make you feel. I saw how hard your cock got in the store cupboard back there. You made me hot just imagining how big it was. Did you notice my nipples go stiff, and god my pussy was dripping, I am surprised you didn't smell me"

She stepped closer to him and replaced his hand with her own; so that she could feel for herself just what he had been hiding in his shorts. She found the soap and gently with slippery hands worked his cock until he was about to explode. He twisted her stiff nipples, and kissed her full lips, and tried to think of anything to stop his orgasm. As she knelt down in front of him, water cascading around her, he knew he couldn't last much longer. She drew his cock into her mouth, between those amazing lips, licking around the head with small flicks of her tongue, and cupped his balls, gently squeezing them. She liked the way this made him gasp.

He lasted like this for only a few seconds. He felt a rush of electricity through his groin, which made his legs weak, and he started to thrust his cock faster in and out of her lips, grabbing at her head an forcing her mouth onto him, until suddenly he let out a strangled cry of release, and emptied his load of spunk into her sweet mouth.