My girlfriend's eyes widen as she catches sight of my throbbing erection straining against my jeans. She licks her lips, a mischievous glint in her eyes, and kneels before me. With expert hands, she unzips my jeans, revealing my hard cock. She takes it in her mouth, her tongue swirling around the head as she sucks eagerly. I grasp her hair, guiding her as she takes me deeper, her moans vibrating around my shaft. She cups my balls, gently squeezing as she continues to pleasure me, her wet mouth sliding up and down my length.