A bit of a pop novelty from the Roaring '20s, this tune was one of several by the team of Denniker & Razaf, Tin Pan Alley regulars who also worked as song "demonstrators" for sheet music shops. Rudy Vallee was the first to make a hit of the infectious number, and despite being relatively lightweight--unkinder critics may say "shallow"--it became something of a jazz standard during the be-bop era.
S'posin' I should fall in love with you,
Do you think that you could love me too?
S'posin' I should hold you and caress you,
Would it impress you?
Or, perhaps, distress you?
S'posin' I should say, "For you I yearn,"
Would ya think I'm speaking out of turn?
And s'posin' I declare it,
Would you take my love and share it?
I'm not s'posin'--I'm in love with you.