Eileen considered this for a second, but then said, "Uh... actually, I think I wanna stay a man for a little while. Do you mind making a wish that no one will notice anything's different?"
"OK!" Ty agreed, and she wished for it, adding to the wish that no one would notice anything different about her either. She turned to start pulling on her discarded clothes, saying as she did, "I guess I should get ready to go?"
To her surprise, she felt Eileen pull her T-shirt off as she pulled it over her head. She turned to see a mischievous grin on his face. "You aren't leaving this house without my seed inside you," he purred, and she felt herself moisten as she looked at his handsome toned chest and the hard penis between his legs. She kissed him and felt him push her down onto the carpet again, before rubbing his the tip of his cock against her clit.
"You're sure you want me to knock you up?" asked Eileen.
"Yeah," Ty breathed sultrily.
Eileen slowly moved his shaft downward and slid it between Ty's nether lips. He grunted and heard her whimper in pleasure at the sensations. The two of them looked at each other with anticipation as Eileen's hips slowly withdrew his shaft and then pushed it back inside, making them both groan almost in unison.
Ty felt the desire to say two deeply needy words come to her, and she satisfied it immediately. "Fuck me," she breathed.
There was no way Eileen could have even tried to hold himself back after hearing Ty ask that of her. His hips established a rapid pounding rhythm, jackhammering his hardness in and out of her with a near-adolescent level of horny haziness. "Mmh... you're such a good girl," he told Ty.
"Ahhn... say that again!" Ty moaned, losing herself in the pleasure.
"You're a really good girl," Eileen replied. "I'm so glad you gave up your cock to give me a nice juicy pussy to pound and mate!"
"Th-thank you," Ty mewled, wrapping her legs around Eileen's back as the young man's motions became faster and more eager, just to make sure he couldn't pull out. She felt Eileen's firm hands reach for her breasts and moaned louder as his fingers cupped the soft flesh and pinched her nipples roughly. She clenched her inner walls around him, and felt his hips pounding her faster and faster, his balls slapping at Ty's crotch forcibly with every thrust.
Before long, Eileen was practically at his limit, and he pushed her into a mating press and grunted needily and sexily into Ty's ear as he reached the last few thrusts before his orgasm. "I'm close... gonna... UHNN!" The spasming of his shaft and the sensation of his semen filling her up made Ty shoot right over the edge with her, and she moaned loudly in satisfaction, her body quaking with pleasure and feeling like it could just melt away.
Slowly, reality irised back in for them both, and they smiled and kissed each other, panting breathlessly.
Inside Ty's pussy, their mutual wish was fulfilled while they relaxed. Eileen's sperm raced their way through Ty's feminine passage and found her waiting eggs. The two ova were surrounded, their defences were worn down and they were fertilized and guided into forming zygotes that impregnated Ty.