Cassie gasped as she said, "I become who you desire." She felt her body already changing
First her hair lightened in color, and became blond. Then it shortened into a boy's spikey cut.
Next, hair grew on her crotch, armpits and legs. Her feet got bigger as her hands and fingers lost their slenderness. Her legs lost their feminine shape and became boy legs.
Then her hips changed shape. They lost their wideness, and became narrow. Her butt became more masculine. Next, her vagina became a penis.
Then her flat stomach became muscular. Her boobs shrank away. Her shoulders broadened. Her arms became more muscular.
Her neck became shorter, and thicker. An Adam's Apple formed. Her face and hair changed into that of a male's house.
Cassie knew she was done changing. THe tingling had stopped. Cassie ran to her full body mirror. She didn't feel the familiar bounce of boobs, but instead felt a penis. When she saw the mirror her jaw hit the floor
"You have a crush on Jake Wilson?" Cassie/Jake asked.
Then..