When Two Become Three

You step through the door to find Rebecca and Sara tangled beneath a blanket, their flushed faces and breathless gasps making it clear what's happening. Your girlfriend's eyes meet yours, half-guilty and half-inviting, while Sara's hand slides brazenly between Rebecca's thighs as if daring you to watch. Instead of anger, your cock hardens instantly, and when Rebecca pulls the blanket aside to reveal both their naked bodies, you're already unbuckling your belt to join this unexpected Czech VR porn threesome.