ST ANDREWS, Scotland (Reuters) - Prince William and fiance Kate Middleton returned to the university where they met and fell in love on Friday with an official visit to St Andrews on the east coast of Scotland. It was at the picturesque university that they got to know each other in 2001 as undergraduates studying art history. They went on to share a house on the outskirts of town, and their romance blossomed. Ten years on, and the royal pair are one of the world's most famous couples, their every move scrutinised by the international media as preparations are made for their wedding in London's Westminster Abbey on April 29.