IMHO, "Your Song" is the greatest love song written to date.

(I thought of the following after the edit window closed.)

The character singing Marie has some of the same awkwardness that the singer of Your Song has, although in a much darker vein. In the second verse he praises Marie with some rather unpoetical metaphors:

You’re the song that the trees sing
When the wind blows
You’re a flower, you’re a river
You’re a rainbow.

No serious poet or lyricist would put these words down in a love song. I think of them as “dumb-guy poetry.” But in their unadorned simplicity and plainness they have a honest beauty that’s rather startling.

He then goes on to confess a whole string of sins that no one else has ever admitted in a love song:

Sometimes I’m crazy, but I guess you know,
And I’m weak and I’m lazy, and I hurt you so
And I don’t listen to a word you say.
When you’re in trouble, I turn away.

But he redeems himself (or tries) the only way he knows how:

But I loved you the first time I saw you,
And I always will love you, Marie.