Eileen pulled out of Ty, gasping for breath with pleasure, his thick dark penis covered in both Ty's translucent juices and his gooey white essence. Ty saw him above her, and heard him breathlessly ask, "H-how do you cope with being this horny?"
"It's h-hard," Ty admitted. She felt pretty fucking horny having just gotten bred twice by this man, all told.
She only hazily heard Eileen's request- "T-turn me back into a g-girl."
"You sure you're done being a boy?" she replied.
"It's too much!" he whined. "I feel like I can't control myself. I mean, I already put two babies in you!"
"It was nice," Ty assured her.
"I'm glad," Eileen said, "but I seriously w-wanna stop being a boy now."
"If you say so," Ty agreed, and focused his power on the thought: make Eileen a girl.
Eileen felt a surge of arousal as his body rapidly filled with female hormones, and Ty watched transfixed as he changed from male to female. His muscles shivered and shrank, his firm figure softening and slimming, and he developed wide hips and smooth, mostly hairless skin. His nipples widened and became erect, and his chest softened and began sprouting, with soft pert breasts soon forming on his chest.
Ty had developed a sudden awareness of her own bisexuality from seeing Eileen becoming female. Her softening voice, its pitch heightening, was very attractive to her, and seeing her large dark boobs made her lustily imagine pressing her own titties against Eileen's or sucking on them. Her approach to how she felt attracted to woman had changed a lot, but she still found them super attractive.
Eileen whimpered and peered past his newly-reformed tits as the changes reached his penis. He and Ty both watched, transfixed, while the thick phallus which had made the conception of their offspring possible began to shrink and shrivel up. His balls slipped up inside him, linking to a freshly formed womb, and his scrotum reshaped from a prominent sac to a flat mound.
His penis continued to recede away inch after inch, until it formed a tiny sensitive nub atop his mound, nerve endings bundling up inside to form her clitoris. A slit formed down his crotch which formed her vaginal opening, making her indistinguishable from someone born female. And in her head she adopted feminine terms to refer to herself by.
After finishing her transformation, for a few seconds Eileen was overwhelmed by her freshly reclaimed femininity- and then she noticed the slight hitch. "Uh, Ty? I'm still a teen," she laughed.