Keith Lemon tends to keep his private life to himself, but he made an exception on Saturday to pay tribute to his wife, Jill.The Celebrity Juice star posted a series of loved-up photos of the couple in honour of Jill's birthday, which he accompanied with a sweet message.MORE: Meet Keith Lemon's family from his wife to his kids"To my bestest and most favourite Appy birfday! Have a lovely day! Big love xxxx," he wrote in his typical jokey style.WATCH: Keith Lemon shares very rare footage of