My girlfriend, always the exhibitionist, sends me a video of her masturbating, claiming it's 'just for fun.' She's in the bathroom, the camera propped up to catch her in the act. She's wearing a tiny thong, her ass on full display as she fingers herself. The sight of her wet pussy glistening under the harsh bathroom light sends a jolt of desire through me. She moans, her voice echoing in the small space, as she brings herself to the brink of orgasm, then stops, teasing me with the promise of more.