Publius is correct. Paul was steady dating model Jane Asher and her brother was Peter, Paul’s presumed future brother-in-law. He gave the duo his song thinking it was a throwaway. It was Peter and Gordon’s first single in February of 1964 and went to #1 in the UK. By June it was #1 on Billboard and Cashbox in North America. Imagine Paul’s Homer Simpson “D’oh!” when his own song dethroned The Beatles from their perpetual #1 slot on both sides of the pond.
I remember Jane Asher.
i was quite jealous at the time, but since i was only 11, There was no hope for me! LOL!