He can't help but stare at her lips, full and inviting, as she talks. 'You're irresistible,' he murmurs, leaning in to kiss her. She parts her lips, and he slips his tongue in, tasting her. She moans, and he takes it as an invitation, pressing his cock against her lips. She opens wider, taking him in. He fucks her mouth slowly, savoring the feeling, watching his cock disappear between her lips. She's eager, her hands on his thighs, encouraging him. He picks up the pace, fucking her mouth harder, until he comes, his hot cum filling her mouth.