The 66-year-old former Beatle is so smitten with Shevell that he has decided to express his love for her in a song.
A source stated, "The song Paul has written for Nancy looks set to be on his new album. Paul has long been inspired by the women in his life and Nancy is no different."
McCartney wrote Maybe I’m Amazed in 1970 for his first wife, Linda, as well as several others such as, And I Love Her and Here, There and Everywhere, for his ex-fiancée, Jane Asher.