What Is The Most Romantic Song That You Have Ever Listen To?

A few more that I can think of:

How deep is your love - Bee Gees
Words - Bee Gees
To love somebody - Bee Gees
You're my home - Billy Joel
Annie's song - John Denver
My eyes adored you - Frankie Valli

and this is up there too
https://www.youtube.com/watch?v=XqLTe8h0-jo
God Only Knows by Mr. Brian Wilson

Paramour - the only exception (is you)

https://youtu.be/-J7J_IWUhls

"I Don't Want to Change You"
Damien Rice

I agree with dweller. I only have eyes for you takes 1st place.