"Unforgettable" is a popular song written by Irving Gordon. The song's original working title was "Uncomparable". The music publishing company asked Irving to change it to "Unforgettable". The song was published in 1951.
=========================
Википедия
----------------------------------------

Unforgettable, thats what you are
Unforgettable though near or far
Like a song of love that clings to me
How the thought of you does things to me
Never before has someone been more

Unforgettable in every way
And forever more, thats how youll stay
Thats why, darling, its incredible
That someone so unforgettable
Thinks that I am unforgettable too

<instrumental interlude>

Unforgettable in every way
And forever more, thats how youll stay
Thats why, darling, its incredible
That someone so unforgettable
Thinks that I am unforgettable too