Whether it's going to the same restaurant every week, doing laundry every Wednesday, or hitting the sack at exactly 11 p.m. every night, routines can get boring. Similarly, having sex with the same person - and only that person - for a long period of time can get boring, too.

But if you still want to be in a relationship with them, what do you do? You can't cheat, as that will destroy the trust and honesty in your relationship. So what other options are there? When that feeling of sexual routine begins to set in, many forward-thinking couples nowadays consider swinging as a solution.

Swinging began in the 1960s during the hippie era of sexual revolution. It involves bringing other sexual partners into the bedroom; often this is done as a couple with another couple or a partner, individually while the other partner watches, or just individually and one-on-one.

All activities are done with the permission of the significant other, though, so there are no feelings of betrayal or hurt.

Swinging is usually not just a one-time thing. Most couples who consider themselves swingers treat it as a lifestyle, regularly attending swingers' parties, meeting other swingers, and going to swingers' events. The most popular place for swingers to go is swingers' clubs.