Agree 100%. Our guy friend is someone we enjoy sexy fun with. Nothing humiliating ever happens or is said. We all have fun, wife LOVES the amount sex she gets, I enjoy watching them together, he likes to watch her and I get it on, she gets really turned on with us watching. She will kiss or sometimes just stare into the eyes of who isn't pumping her. No one is denied anything, there no "cage" anywhere in our home, I'm not "forced or required" to do anything. Him and I have and do enjoy licking her after she been fucked but she gets wiped off first. And yea there's still sperm down there and yes I can taste it but we do it because she gets SO turned on and absolutely loves tye whole deal.
He's younger, has a bigger dick and it's easy to see she likes sex with him.
This is our behind closed doors fun, none of our friends know.
Wife and I have great sex for days after he's been with us.