I don't know about Difficult Kind, but I know there were a loooooot of rumours on "My favorite Mistake" being about him, check this out: "The debut single from this album, "My Favorite Mistake," was rumored to be about Eric Clapton, although Crow claims otherwise about a philandering ex-boyfriend. Crow has refused to say who the song was about telling Billboard Magazine on the release of her album. "Oh, there will be just so much speculation, and because of that there's great safety and protection in the fact that people will be guessing so many different people and I'm the only person who will ever really know. I'm really private about who I've had relationships with, and I don't talk about them in the press. I don't even really talk about them with the people around me." Hope this helps!