Cowboy Lady- Jason Aldean

I know a lot of people on here aren't Aldean fans, but a few are.

I was just wondering if anybody knew why Cowboy Lady was not on any cd that Aldean put out. It's one of my favorites from Aldean, and it's been out a while but it's not on any cd. Is it a bonus song on cd that I just didn't get? Anybody know the story of why this isn't on a cd, if not a bonus song or something along those lines???