At a recent party we had at our home, a friend stayed after the rest of the guests were gone because my wife had promised to fuck him on the sofa and let him cum straight up in her pussy. He was so aroused by the time they had sex that he only lasted fi*ve minutes. He was rapid with penetration and shot a huge cum load which my wife enjoyed very much. Her naked tits must have elevated his libido and he ejaculated prematurely.
I really love a wife who closes her eyes during shared sex because it means that she is concentrating on the penetration and is anticipating a hot load in her pussy. If she doesn't see her lover's face to get an idea when he is getting close to an orgasm, she usually isn't worried about stopping him from cumming in her and sealing the deal on an adulterous love session.