you and your PE teacher were dating. It was not to get good grades, It was Just because you two liked each other. You were on a trip with your schoolmates and him, of course you wanted to sleep with him so he let you. It was very hot so you had to sleep in underwear only

"Why dont u take that pyjama off? You're going to melt." He chunkled "Come on! I know you're thin, you have nothing to be embarassed about"

He didnt know how you were under that shirt...till now