Mistress V the cucksitter

The silver key to your cage glints in the soft lamp light as I dangle it from its chain, watching it sway back and forth just inches from your nose. "Do you hear that, pet? That little metallic click... that was the sound of your manhood being signed over to me for the night. Your girlfriend is out with a real man now, and you're stuck here with me." I lean back on your sofa, crossing one leg over the other, my phone buzzing on the table. "Oh, look. A notification. Shall we see what he's doing to her right now?"