Prince Harry is gearing up to fly back to the UK from America for the coronation of his father, King Charles III next week.The Duke of Sussex's relationship with the King is understood to be difficult at the moment after he and his wife, Meghan, the Duchess of Sussex, moved to California in an effort to distance themselves from the British Royal family - and later made various accusations criticising the way Senior Royals had treated them over the years. But the most Senior Royal of all, the late Queen Elizabeth II, had a close relationship with Prince Harry - and certainly, he'll be feeling mixed emotions when he returns to Westminster Abbey for his father's coronation, the same Abbey where the Queen's funeral was held last September.The Queen sadly passed away just a week before the Duke of Sussex's 38th birthday in September, 2022 - so Prince Harry never received a Happy Birthday message from her on the day.