I recently have been learning out how to play harmonicas, because old injuries to my left shoulder and right hand make it painful to play keyboard, guitar and flute-type instruments that I've been playing for decades. For variety I bought two another harmonicas with holes patterned in minor keys. I was trying out my D natural minor harmonica during a break at work, and came up with a country/folk style melody and thought of "I'm gonna dry my tears from you". As I developed the song, I liked the line about being suckered by her bluff, and decided to make losing at gambling as a metaphor for losing at love as the dominant theme. For a similar perspective, look for my song from a few years ago called Lady Luck Stomped Out.