Many people are familiar with the concept of polygamy, in which a person has more than one spouse. Most of us have heard of men having multiple wives. Less well known is polyandry, the term for one women having multiple husbands. Both practices are illegal in most of the American countries. Polyamory, having multiple love relationships in which all partners are aware of the others, is perfectly legal as long as the multiple commitments do not include a formal marriage.
Swinging is a a more casual way to get involved with multiple partners. Traditionally, swingers were couples who liked to swap partners with other pairs, either for a one-time sexual encounter or for ongoing play. Today, the term also includes singles who enjoy encounters with couples or groups.
Many large cities have swinger's clubs, public nightclubs where interested people can meet and pursue their sexual interests. These places aren't always advertised, so it helps to know someone who's already a member of the scene. Private parties are another way for swingers to meet and connect. With the popularity of online dating, it's gotten much easier to meet fellow swingers. Some dating sites are devoted to swinging, or let members click "swinger" as an option. Couplelookingforwoman.com;is one of the largest sites for this kind of alternative dating.
Polyamory can be a difficult topic to bring up in a threesome relationship. Not everyone will understand, or appreciate, the idea that love can and should be shared. Online poly dating sites can be a short-cut to finding people who are already comfortable with the “find a threesome” or “poly relationship” lifestyle. To learn more, try the Polyamory Society.
Polyamorists believe that traditional marriage is simply one of many lifestyle choices. Some polyamorists argue that, since many other cultures embrace the idea of multiple partners, monogamy is an aberration. Polyfidelitous groups are essentially marriages among multiple people. They are sexually exclusive. Members often share a home.
Open marriages are traditional marriages with a twist: although the partners are emotionally committed to one another, outside romances are accepted and even welcomed. Some polyamorous groups are open, too. Intimate networks are more loosely knit groups in which all members are aware that the relationships are "open." Members may come and go, and the depth of commitment varies.