Your ONE all time favorite love song?

For me it's "The First Time Ever I Saw Your Face" by Roberta Flack, from her CD "Softly with These Songs, the Best of Roberta Flack", on Atlantic. I'm looking for LOVE SONGS. Thanks and Cheers. Craig
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"I'm Not In Love" by 10CC is the song I would choose. You'd think by the title that this is not a love song but it is. Eric Stewart and the boys say they're not in love but they are! Denial is so hard to admit! The female whispered line "Be quiet, big boys don't cry.." puts the song into perspective. Let's just say this song hits home. Anybody have a tissue?

Cannot name just one,here are some of the Best!!!
Something-The Beatles,(George singing about Patti Boyd only to have her stolen later by Eric Clapton)
All my love-Led Zeppelin.(Lp-In through the Out door)
This Guy's in Love with you-Herb Alpert & The Tijuana Brass.