swinging

I believe it's safe to say that all married women have fantasized, at least once, about having sex with another partner during their healthy, happy, and loving marriage. Her fantasy may be a secret affair with a celebrity, someone at the office, or perhaps just a sexy and willing figment of her imagination.

"Lifestyle." When used in mainstream culture, most think of the latest fashion trends, but it's a term used to convey the adventurous practices of couples and singles that enjoy recreational sex with other consenting adults, otherwise known as swingers.