Breeding drabble! (random GIF inspired micro fiction)

God damn it. He hadn’t meant to finish inside her. One minute they were wrestling, a playful tussle because he’d been gone for two weeks and they’d missed each other desperately, and then they were kissing—roommates aren’t for kissing, but her lips were sweet magic against his, he couldn’t help it—and then her sundress slipped up her curvy thighs and that first brush of his hand against her cotton panties...