Celebrity Big Brother star Louis Walsh has opened up about his time on the show and once again failed to hold his tongue – but vowed he’ll “be nicer” in the future. During his time on the ITV reality show, Walsh called Jedward “vile”, slammed his past relationship with Simon Cowell and gave harsh opinions of the likes of Bob Geldof and Cheryl Cole. His stint in the house divided many viewers, with some claiming he shouldn’t have made it as far as he did, and others baffled as to how he didn’t win – that crown went to Ibiza Weekender star David Potts. Since the leaving the house, Walsh has sat …