Actually, "True Love," "Love Me Tender," and "What A Wonderful World" were on that long list of popular wedding songs I found and posted above. And "It Had To Be You" has got to be one of the favorite songs in the retirement communities where I do music (folks who were teenagers in the 1930s-1940s).    I just didn't post all of them, especially if they were popular before 1960 or 1970 (unless they've been recently covered).

If you want to go back before 1960, one of my favorite love songs is "L'Hymne A L'Amour" by Edith Piaf, which was a huge hit in the US as Jo Stafford's "If You Love Me."   A very powerful song.