In a unexpected twist of fate, I walked in on my ex-girlfriend, a sultry vixen with a penchant for exhibitionism, on her knees, eagerly swallowing my best friend's throbbing cock. Her once familiar mouth, now a stranger's, worked his shaft with practiced ease. She glanced up at me, her eyes gleaming with a mix of shame and excitement, her cheeks hollowed as she sucked him deep. My friend, caught off guard, held my gaze, his hips moving in rhythm with her head. The room filled with the wet sounds of her oral ministrations, a symphony of her betrayal and my cuckolding.