There's an expectation that couples share a bed, but what if sleep isn't compatible with being in the same room as your other half? Maybe they snore, maybe they starfish, or maybe you just need a few hours without another human touching you. Is a sleep divorce, AKA, having separate bedrooms, the answer? There's a trend towards normalising sleeping separately from your partner. Cameron Diaz is doing it. So are the Beckhams. But does this arrangement spell the end of sex and intimacy? Or does it make for a better night's sleep and a better waking relationship?