What's the best love song ever written ?

Sometimes I wonder
What's the best love song ever written ?
The best love song is not yet written, I'd realize !
And I doubt it will ever be.

For me the best love song is
The music of butterflies that you feel,
The music of heart beats racing slowly,
The music of the laughter,
And the sound of silence when together.

The music of your fingers tapping the screen during the chats,
The music of sighs when she falls in your arms,
The music of her breaths as she comes close,
The music of trembling lips when having important conversations,
The music of the flow of 'happy hormones',
The music of surprises,
The music of anxiety,
The music of relief.

The best love song is
The music of everyday love
That you feel yet cannot write
The best love song is hence, not written, nor it would ever be.