Swingers might bring to mind the Austin Powers era, but you should know that it's not just an outdated term for cheaters. It's actually a specific lifestyle, with its own communities, clubs and standards for behavior.
Swingers are people who like to go out and get down with new folks, whether they are strangers or other swinging friends. They sometimes have threesomes and group orgies at home. Usually, when we say swingers, we think of couples. Swinging is mostly a sexual activity, although friendships may also form. Couples are honest with each other about their activities, and abide by any agreements about limits and safe sex.
Distinct from this lifestyle is the much more ubiquitous species: the cheater. The cheater lies, conceals, or fails to be honest about their activities. The cheater agrees to one type of relationship but then treats it like another.
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