Advertisement Selly claimed she never did the deed with her housemate — but Nando contradicted this by claiming that Selly had given him chlamydia after a night of unprotected sex. Channel 4 In series six, the housemates were faced with the Box Task, with each star having to sit in a cardboard box for as long as possible. Anthony denied having sex with her, and five years later on Ultimate Big Brother she would apologise for her "mistake". Ah, nothing better than seeing a sweet romance blossom before our eyes. However, some rather awkward hip thrusting turned the clinch X-rated, with Makosi later going to the diary room to announce that she could be pregnant. Channel 5 Steven Goode and Kimberly Kisselovich ensured that the words 'open it' will give Big Brother fans flashbacks after al these years. Although other housemates had claimed to have already done it, this was the first time a housemate took it that far on camera. Ray's solo fun under the duvet Image: But it's not just in the UK house where the contestants have been getting nice and intimate with each other, there are plenty more X-rated telly trysts in BB houses across the globe. While there was no medical evidence Selly was the culprit, Nando was treated for the sexually transmitted infection by BB doctors. The couple - who would later get married - took things to a much more graphic and x-rated level as they fumbled under the sheets. Michelle and Stuart of BB5 had us gripped with their boy-meets-bunny-boiler romance, but intrigued us even more when they disappeared under the dining room table for some alone time. Box task takes an awkward turn Image: It didn't take long for her to make headlines with a VERY raunchy moment when she drunkenly revealed she intended to, erm, pleasure herself with a wine bottle. So, ahead of more possible cringeworthy sexploits, we've taken a look back at the shameless couples around the world who just couldn't wait for the cameras to stop rolling. While the graphic content was not screened, the sounds of the tryst were — and let's just say Ryan was the predecessor to Two Second Steven. Way to make history, guys.