In stage musical Babes In Arms, along with the earliest Where Or When and The Lady Is A Tramp (see all there). Not exactly meant to celebrate February 14th: Mitzi Green's character in the play was called Valentine. Oddly enough, of these three soon-to-be standards, only Where Or When was featured in the 1939 film version starring Mickey Rooney and Judy Garland.
Edgar Fairchild & Adam Carroll [for Liberty Music Shop]
Hal McIntyre [vocal by Ruth Gaylor]
Gordon Jenkins [vocal by Charles La Vere]
Mel Tormé [with the Page Cavanough Trio]
Gerry Mulligan [featuring Chet Baker]
Chet Baker [vocal version]
Sarah Vaughan [idem]
Trudy Erwin [in film Pal Joey, dubbing for Kim Novak]
Rodgers & Hart [authors]
Julie London [on Her Last Recordings]
Michelle Pfeiffer [in film The Fabulous Baker Boys]
Chaka Khan [in film Waiting To Exhale]
Matt Damon & The Guy Barker International Quintet [in film The Talented Mr. Ripley]
Sting [and in '21 in duet with Herbie Hancock]
Richard Rodgers also wrote the music for The Sound Of Music and the same duo is also responsible for songs as Blue Moon and Bewitched (see there).