The smile on a wife’s face while having extra-marital sex is a great indication that she is enjoying the sexual intercourse.. I haven’t been privileged to witness my wife’s smile in real time during an affair but I have sent a few phone videos of her having sex with a friend and she is smiling. Of course, when I get a video with a close-up view of my wife’s pussy oozing a lover’s cum, I’m sure that she is really smiling from the warm sensation of having her birthing canal inseminated.