John Travolta is relatively private when it comes to his personal life but this week, the Grease star delighted fans with a rare Instagram post.MORE: John Travolta returns to social media with exciting newsWhat's more, the Hollywood star shared a glimpse inside his huge family home, where he lives with daughter Ella and son Benjamin.The doting father was pictured cuddling up to his beloved pet dog while sitting on a red armchair in the middle of his large living room. VIDEO: John Travolta and