It is a lot like this.
Scenario Example: We're more a Stag/Vixen couple (graduated from hetero Swingers). A MFM is arranged. After the other male and myself give her some initial foreplay, I give the wife and the other male some "together time" while I watch and/or film. Soon they'll get into their own little world, and if I see the other male getting close, I'll announce,
"It's okay, you can cum in her". I think that gives the other male the incentive to really pound his cock into her. And she takes his forcefulness as the excitement she can bring to a stranger with her body. Watching my wife "take it" as the other male drains his balls into her is the thrill. As I'm thinking "She just wanted to be fucked. It didn't matter by who".
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