Lewis felt bad when it happened, but things spiraled quickly.
The first wish was a no brainer. Lewis wished for a big cock. He was on the average size, but wanted to be huge. The huge bulge that appears in his pants was awesome.
His buddy Chris took the second wish. Always whining about his health, Chris wished for a long, healthy life. He slimmed down a little bit, but not a lot else changed.
Lewis - as finder of the lamp - got the third and final wish. He thought about it for a while. He liked his job and made plenty of money, so felt no need to wish for cash. Long life sounded good, but Lewis had a more pressing want. He wished for a hot, devoted girlfriend.
Lewis's jaw dropped when Chris suddenly shrank as tits swelled on his chest. In seconds his buddy became a smoking hot babe.
She blinked a few times then looked down at the bulge in Lewis's pants. "Guess I'd better get a good look at this new thing."
Before Lewis could say anything else, she was between his legs sucking his dick.
Lewis could only groan as he saw his impressive new member for the first time, and it was disappearing into her mouth. She made eye contact with him and he looked there for anger or digust - some sign that Chris was still in there. He saw nothing but a curiousity and eagerness to please.
"Let's see how this big things feels inside of me." She giggled and stripped. Lewis was so wound up by that point, he didn't hesitate to plunge into her. Her pussy felt amazing around his huge dick.
She whimpered and moaned as his monstrous manhood stretched her. She sounded completely and unfailingly female. She squealed and squeaked when she came, pleading the whole time "Don't stop!" and "Harder!" He kept fucking her and she seemed very pleased with that.
By the time he was ready to bust his nut, Lewis was convinced. His wish had erased his buddy Chris. Instead he had this woman, probably named Chrissy or some shit, and she was a total slut for his dick.
What's done was done, so there was no point feeling guilty about it. All he could do was enjoy his slutty, devoted new girlfriend.
So he pulled out and nutted all over her face.
She knelt there and took it, gasping and swallowing more than a little. When it was all done, she blinked up at him and smiled, "Wow. I can't believe you just did that to me!" Something about her tone startled Lewis, "I mean, fucking me is one thing, but this!?" She pointed at her splattered face and giggled, "I feel like such a slut!"
"I-" Lewis paused, "Chris?"
"Yeah, who were you expecting?" Chris wiped some of the cum off his face, "That wish really did a number on me! I can't believe I'm a fucking woman!"
"But- you-" Lewis was completely baffled.
"Ok, cards on the table, I may have given the idea of being a woman some thought before. Not permanent like, but like as a passing 'it could be cool to try' kind of way. Now I guess I'm stuck this way forever though." Chris sighed, "Not ideal, but I'll survive. Hell, if that orgasm was anything to go by, I'll thrive."
"So... you're still you... but also my girlfriend?" Lewis asked, confused yet hopeful.
"Stuff me with that monster a few more times and you can call me anything you want." Chris winked.
It was the sloppy start of a beautiful, sexy romance.