This is a downright adorable and lovely song from the Sandy Wilson musical The Boy Friend of 1954, and if the phrases “adorable” and “from the musical” turn you off, I still plead you to take a listen.
Made into a movie by Ken Russell in 1971 starring Twiggy and featuring great costumes, The Boy Friend was a favorite of mine growing up. This romantic and simple song is the one that has stuck with me the most. A forgotten classic love song. I recommend the film version, it is far less theater-y.