[PHOTOS] Three Not A Crowd - Couple Share Their Bed and Body With Live-in Girlfriend

                                     Polyamorous couple, Kamala Devi and Michael McClure, aged 38 and 49 respectively, swore off monogamy from day one. They have up to a dozen different lovers each, some to themselves and some who they share.

Six months ago they welcomed 27-year-old bisexual Rachel Rickards into their home in San Diego, California, and now the three of them enjoy each other's company and bodies.  They reveal how an active sex life boosts their mood and keeps them fit.                                                                                                               'One of my favoroite things since we all lived together is actually the fact that we do more exercise. It's so improved my live,' Ms Devi told ABC News, while Mr McClure interjected: 'And your butt.'

They say that Ms Rickards also provides a helping hand when it comes to raising their six-year-old son, Devin. He was educated about his unusual family set-up from a young age.

Addressing concerns about how he might be effected by the situation Mr McClure said: 'He understands the word "polyamory. He understands what that means. He doesn't really know what sex is yet.'

It was originally Mr McClure's decision to have Ms Rickards move in, after he met the pretty brunette on holiday.

Ms Devi, a full-time sex and relationship coach, approved the arrangement because she saw her husband so 'happy' – not because she was worried about losing him to a younger model.

In fact, she had been dating another woman named Roxanne for two years anyway and only saw it fair that Mr McClure pursued someone of interest too.

Ms Devi and Roxanne

Ms Rickards, who also divides her time between two boyfriends and a girlfriend, isn't the first person to have lived with Ms Devi and Mr McClure.