How Am I to Know?

"How Am I to Know?" is a song Frank Sinatra recorded alongside Tommy Dorsey and his Orchestra.

Lyrics
Oh, how am I to know if it's really love that found its grave here, Oh, how am I to know, will it linger on, and leave me there. I dare not guess at this strange happiness Oh, how am I to know, can it be that love has come to stay here.