This guy suspects his soul mate is cheating on him, but he needs solid proof that she's a screwing slut. That's why he has her tied and blindfolded and lets his friend ride her slurping muff to look her reaction when she finds out who's actually fucking her. She makes it watch appreciate she's shocked and at first, but then her slutty side takes over and she enjoys sex with a total unknown person as well as a messy jizz enjoy a real bitch.
