Courtesy of Gibson:
1969, Paul McCartney married Linda Eastman at Marylebone Register Office, London. They then held a reception lunch at The Ritz Hotel. Paul went to the recording studio in the evening to work. George Harrison and his wife Patti were arrested on the same day and charged with possession of marijuana.
Of the many songs that Paul wrote in celebration of his love for Linda, there isn't a better one than "Two of Us." (I know: it also addresses Paul's relationship with John - it's a wonderfully layered lyric.)
(If the video is removed, go here.)