“It was optimistic, a hopeful message for Julian: ‘Come on, man, your parents got divorced. I know you’re not happy, but you’ll be OK.’”
According to RadioX, Sir Paul was embarrassed by the line ‘The movement you need is on your shoulder,’ and had a plan to change it.
It was his bandmate John who claimed this was the best part of the song, and he should leave it, which is a surprise given the delicate nature of the song.
Nevertheless, always a professional, John continued to support his songwriting partner and work on the song.
According to Steve Turner’s The Beatles, The Stories Behind the Songs, Julian was told about how he was the inspiration behind the song about 20 years later.