The guy we do this with is the UPS guy at her office. They can but usually don't see each other at her work.
We've invited him to a couple of backyard BBQ at our home with other friends. He's a cool guy and never says anything.
Wife won't admit but she gets off having him mingle with our friends.
I'm sure no one suspects anything.
Similar topic, he was with us one night. We messed around till about 3am, we fucked the ...... out of her and she got really nasty. We both fucked her in the ass. She loved every minute of it. He went home, we went to ....... We had sex in the morning. Was a great time.
About 9:30 am her mom stopped by, they were chatting over coffee in the kitchen. All I could think about was what she was doing a few hours befor.