Instantly you both start bucking your hips. Once you come, you start to feel strange, his sheth dosen't seem to be shrinking, if anything it is your penis that is shrinking. You start to feel very hot and notice that you are starting to grow a fur coat but on your chest you find two curious mounds and find out that it is you that is being changed into a female. Once the changes have finished, you ask him why he lied to you.
"I have no desire to be a female" he responds, "So I said I'd be the one who changes to get your trust."
"But I never said I wanted to be a female" you say.
"Too late now, you can never change back or become a male again" he says.
"Fine" you say, "but I don't want to have sex for at least a few days so i can get used to this body."