This is one of those songs (like Olivia Newton-John's "I Honestly Love You") that when I was a teenager listening to the radio in the mid-70s, I had no idea the song was about adultery. I heard the song years later as an adult and realized it was about a musician going home to his wife and saying goodbye to the lover he'd had on the tour. In fact, this may only have clicked in my mind after seeing "Almost Famous".