All I Want For Christmas Is... A THREESOME: Couples Spending $12,000 For Sex Sessions...

A candle for your mum, a book for your brother, wine for a work colleague... and a threesome for your boyfriend.

That's what some people's Christmas shopping lists will look like this year, as more and more couples decide to book an menage au trois as a festive present for each other. 

And it's becoming so popular that some escorts, like Sydney-based Summer Knight, are noticing their December client list filling up with couples.