A different kind of chemistry lesson

She worked at a private school in the science department. The students had already left as she met him in reception. She asked him to come in as she still was tiding the laboratory after a busy chemistry lesson. There were lots of bottles of various solutions that she carefully placed on a stainless steel trolley. A bit like Harry Potter he smiled to himself.
He followed her to the chemical store to return all the paraphernalia. She was pushing the trolley with him walking behind her, admiring the view. Tall boots with heels and a knee length skirt accentuating her tight cute arse, which looked even more enticing being slightly bent over the trolley.
She pulled out a key, opened the door and pushed in the trolley. There wasn’t a lot of room and he had squeeze past her to allow the door to shut behind them. She turned the key from the inside while giving him a look with the knowing smile. She turned to the trolley to empty all the bottles into the various shelves while he couldn’t help noticing the strange smells of soluble solutions and many other chemicals. It wasn’t unpleasant, just not something he was used to.
Once she finished she turned towards him and put her hands behind his neck to pull him into a deep kiss. She whispered in his ear:” I need you now but we don’t have much time.” As she said it, she unzipped his trousers and firmly gripped his erection. He didn’t need telling twice and removed her top and bra, gently massaging her breast while kissing her neck. His hands went under her skirt to remove her panties before sliding up between her legs. He could feel how wet she was and just as ready as him. She turned around and bent over the trolley lifting her skirt. Her heels lifted her to the perfect height and he entered her from behind, one hand playing with her nipple the other massaging her clitoris. It didn’t take long before she came with an intense and short orgasm which promptly made him come hard inside her. It wasn’t their usual sensual love making but there would be plenty of time for that later.