Celebrity Ex On The Beach has hit our screens – and it’s already delivering explosive twists, emotional confrontations and surprise arrivals from the past. new goes behind the scenes for a full, unfiltered sit-down with one of its stars, Jedward’s John Grimes – who first rose to fame with his twin brother Edward on The X Factor in 2009 – and nothing is off-limits. As his past quite literally washes up on the beach, John, 34, speaks about everything from pre-show nerves and public perceptions to