I strongly disagree with some songs on your list, especially Keating is pretty terrible in my opinion. But that's a matter of taste. Piaf is great, though.
Here are two of my favourite love songs:
And you said, this is the first day of my life Glad I didn't die before I met you Now I don't care, I could go anywhere with you And I'd probably be happy
And one day we will die And our ashes will fly from the aeroplane over the sea But for now we are young Let us lay in the sun And count every beautiful thing we can see Love to be In the arms of all I'm keeping here with me, me