Brian moaned loudly as he felt his ass swell more as the man's cock penetrated deeper and deeper, his growing breasts wobbling on his chest.  His cock shrinking, his semen literally flowing from the tip of his cock onto the sheets, as his male hormones flowed from his body, female hormones taking their place. 

 

Hating what he was becoming, squirming beneath the man, all he could do was scream in orgasm as the mans cock pumped into him. 

 

Soon Brian would be no more, and Brianna would be a slave to her new pussy.