There’s something in the Hollywood water at the moment – and we’re not happy about it. Yet another young celebrity couple have called it quits! After almost six years in a relationship, songstress Demi Lovato and That 70s Show hunk, Wilmer Valderrama have announced that they’ve separated. Demi confirmed the split on Twitter, saying that they both decided that ‘they’re better as best friends’. She continued, “This was an incredibly difficult decisio