Video: Willie Nelson - Cowboys Are Frequently, Secretly (Fond Of Each Other)
Check out the lyrics to the song here (the reference to 'Pansy Division' is not homophobic...they are a Queercore band that recorded the song in 1995!).
Whilst I'm here, it only seems right to mention Nelson's song He Was A Friend Of Mine, which was used in the film Brokeback Mountain (and which is a great song)...i.e. from a song about gay cowboys to a song used in a film about gay cowboys, and both from the same artist.
mp3: Willie Nelson - He Was A Friend Of Mine