Swinging, sometimes called wife swapping, husband swapping or partner swapping, is a non-monogamous behavior in which both singles and partners in a committed relationship engage in sexual activities with others as a recreational or social activity. Swinging is a form of open relationship. People may choose a swinging lifestyle for a variety of reasons. Many cite an increased quality, quantity, and frequency of sex. Some people may engage in swinging to add variety into their otherwise conventional sex lives or due to their curiosity. Some couples see swinging as a healthy outlet and means to strengthen their relationship.
The phenomenon of swinging, or at least its wider discussion and practice, is regarded by some as arising from the freer attitudes to sexual activity after the sexual revolution of the 1960s, the invention and availability of the contraceptive pill, and the emergence of treatments for many of the sexually transmitted diseases that were known at that time. The adoption of safe sex practices became more common in the late 1980s.
The swinger community sometimes refers to itself as "the lifestyle", or as "the alternative lifestyle". Depending on the culture and the context, the practice has also been called "wife lending", "wife sharing", a "community of women" or similar terms.
Swinging can take place in a number of contexts, ranging from spontaneous sexual activity involving partner swapping or adding a third or more participants at an informal gathering of friends to planned regular social meetings to "hooking up" with like-minded people at a sex club (also known as a swinger club, not to be confused with a strip club). Different clubs offer varied facilities and atmospheres, and often hold "theme" nights.
Swinging is also known to take place in semi-public venues such as hotels, resorts, or cruise ships, or often in private homes. Furthermore, many websites that cater to swinging couples now exist, some boasting hundreds of thousands of members.