Ever since "Big Brother" first locked away a group of competitors — called houseguests — in a house for the summer and called it reality TV, people have been tuning in to see all the drama unfold in real time. Airing three times a week on TV, the CBS show is on all of the time thanks to a set of cameras and microphones that pick up contestant behavior 24 hours a day, seven days a week, and stream it live to audiences online. Fans can watch the houseguests eat, cook, and sleep — and strategize, of course. But with 20 years and over 20 seasons under its belt, even the biggest of superfans don't know everything there is to know about this show.

Wait, what? Love Island's Faye Winter hits out at stars who complain about 'editing'. Love Island's Jake Cornish reunites with select stars after 'sick' show swerve. You get the most dramatic arguments of all time, some major nervous breakdowns when will Nikki Grahame grace our screens again?

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But which couples were physically intimate in the house? Season four was the perhaps ill-conceived season of putting exes in the house together. Most of the ex-boyfriends and ex-girlfriends made for good TV, but one guy, Scott Weintraub, flipped his lid on day eight because he was trapped in the house with his ex-girlfriend, Amanda Craig. Matt McDonald and Natalie Cunial were paired together and they instantly hit it off — or rather, McDonald wanted to hook up and Cunial was convinced they were actual soulmates.