"WHAT ARE YOU DOING?" Your girlfriend screams at you. Her voice started to drop a few octaves. You notice an adam apple start to grow on her throat.
You just stay silent. After changing your girlfriend into a crossdresser boy, you knew that deep inside you like boy, but you still like girl. So, you secretly hope your girlfriend changes into your best friend.
You can see your girlfriend's body clearly since she hasn't put any clothes after the last transformation. Unlike the last transformation, now it seems her inner organ starts to change first. Her bone grows longer and bigger, adding her height from 5 feet to 6 feet. Her ovaries change into testicles. Her vagina gradually formed a penis. It's small at first but quickly lengthen to 7 inches, followed by big balls hanging quite nicely.
You see her new big penis and think it's more appropriate to address her as a he. Although, your girlfriend's hourglass figure hasn't changed yet.
"I'M A MAN AGAIN?!?? WHAT ARE YOU? ARE YOU GAY?" Your transforming girlfriend has deep baritone voice now. His adam apple clearly protruding from his throat.
Seeing her/his hanging penis aroused you. You start unzipping your pants and stick your penis inside your girlfriend's mouth. Although, he was shocked at first, s/he seems to enjoy your cock. You feel his tongue licking your penis. You grab his long blonde hair and feel it is slipping your hand. His long blonde hair start to retract inside his skull leaving a bald head. When you cum inside your girl/BOYfriend's mouth, his face rapidly transform into your BFF face. His beautiful feminine female face is changing into an African descent male face. His nose and mouth grows. His eyes become black.
Seeing this, you pull your cock and shove it to Marie's round and sexy ass. Your body and your boyfriend body move in a rythm. You notice his back is changing from slender female back into hard with muscle. His biceps grow significantly. You try to cusp your boyfriend breast, but at each thrust, it deflate into hard pectoral muscle. Marie's belly becomes hard and six pack appears on his belly.
Your girlfriend is like a clone of your BFF now, only his skin tone still light tan. You shoot antoher load of sperm inside his ass just at the same time as he is. It seems to trigger the final change. Your boyfriend's skin start to darken, completing his African heritance.
You see your boyfriend face smiling at you. "Wow I don't know that fucked by a boy is this good," your transformed boyfriend said.
"Wait, you aren't mad at me anymore babe?" You confusedly asked.
"Why would I, dude? And I know I agree to have sex with you in one condition that I'll pretend to be a your imaginary girl, but I like you and I would love to do this again. Except, this time not as an imaginary blonde girlfriend that you fantasize about."