"I, uh... I have a confession," Ty said quietly.
"Yeah?" Nick replied.
"Well, it's like..." Ty paused to think through what he wanted to say. "The whole reason I gave myself a vagina was because I wondered what it would be like to be a girl, but I didn't want to go too fast." Nick nodded. "But now, I've realized I really like being girly. I kinda want to become a total girl."
"Fair enough," Nick answered.
"I guess... I wasn't sure if you'd be OK with that."
"Why wouldn't I be? I'd love for you to be my girlfriend!" Nick replied, smiling sweetly. "If you wanna do it, do it!"
"Thanks, Nick," Ty replied. "I love you." With that, he thought to himself about turning into a girl, and made sure in his head only Nick would ever remember he had been a boy. As he did, he felt his whole body tingle all over, his breathing becoming softer and higher pitched. He let out a little moan as his face started reshaping, his larynx receding, his cheeks reshaping and his skin becoming softer all over. His arms and hands softened and slimmed, his nails lengthening and his arm hair vanishing. One hand went to his chest, as his skin rippled below his hard, feminine nipples. Soon, he moaned as he felt full breasts form on her chest, intensifying the feelings of her erect nipples, and her hips widened whilst her stomach shifted into an hourglass shape. Finally, her legs and feet slimmed and shed their hair as they took on her newfound femininity.
Louise (as Ty decided she wanted to be known now) looked down and sighed happily at her newly feminine body... and then noticed Nick grasping his hard cock in his hand. He blushed as he looked up at her.