"The Girl of My Best Friend" is a song written by Sam Bobrick and Beverly Ross[1] and first released in 1959 by Charlie Blackwell as the B-side to his single "Choppin' Mountains".
It was made famous as a cover by Elvis Presley with The Jordanaires in 1960, the song peaked at No.9 in the U.K. singles chart (in 1976).
He describes the girl's features, attributes, and the love she and his friend shares.
The singer wants the girl to know about his feelings for her, but can't bring himself to tell her for fear that she would become offended and he would be shunned by both her and his friend.
He hopes his "aching heart" mends someday and he finds a love of his own, with similar features and personality as his best friend's girl.