Ty took a little while to get a handle on her new self. It felt beyond weird to think she was a girl now, and that this was her body. What felt weirdest to her was how deeply... different her sexuality felt. He had always assumed girls were way less horny than boys, but right now she was discovering they were just more discrete about it. She ached with desire- her tits (holy shit, she had tits!) were sensitive, her nipples puffy and erect, and a warmth was welling up between her legs.
Her thighs pressed together and she felt moisture. She was getting wet for the first time. It leaked from the aching void inside her, a void she felt desperate to fill. The sensitive nub of her clitoris poked out in arousal. This felt so weird after how all his life before this he'd had a penis.
The mental image of a phallus sent a wave of arousal through Ty's mind. It began to dawn on her that not only had her sex been reversed, so had her sexuality. For as long as he had understood his sexuality, he had thought of himself as a man attracted to women; now, she thought of herself as a woman attracted to men. Her hand moved between her legs to where his own penis had been just minutes ago.
While she carefully rubbed herself and her fingers stroked her moist folds, her free hand cupped her breast. Fuck, it felt nice! Why the hell did men think of themselves as the 'better sex' when they can never feel this? She wondered to herself as she fondled the soft mound and pinched at her sensitive nipple, fully formed from its abortive masculine counterpart. She imagined having it sucked and licked and her desire amplified.
A slender digit carefully eased inside Ty's slit and she gasped at how it felt to have something inside herself. She slid them outwards, then inwards, establishing a gradual rhythm as her thumb massaged her clit. Soft whimpers and groans messily fell from her mouth. This was too much, and she couldn't get enough of it.
All her mind could focus on was an intense fantasy. She pictured herself with a handsome man behind her, his cock filling her up as he thrust in and out of her fast and forcefully. His hands held her breasts to keep her up, pinching and rubbing her nipples. His balls slapped at her crotch to remind her how he'd given up his own manhood. Her fingers frigged at her faster and faster, recreating his motions as best as they could.
Ty could tell she desired something deeper than getting fucked, and wondered what it might be for a second before it dawned on her. ...Bred. She ached for this man to breed her. She imagined his peak, thick semen squirting all over her fertile pussy walls. She imagined his sperm weaning their way inside her. She imagined an egg in her deepest depths that they would seize for their own and eventually fertilize, making her pregnant with his offspring.
As she came gasping and panting to her first female orgasm, Ty was surprised both at how shamelessly horny she'd gotten and at how intense it felt. She shook, made cries of pleasure and did nothing else for what felt like forever, though it was probably just a few seconds. Soon she could think rationally again, and thankfully she felt able to understand that getting impregnated at her age wasn't the best idea. But even so, she still felt kinda horny...