After Petty died his family released an early recording of another song that ended up on the "Wildflowers" album, "You Don't Know How It Feels," which included this verse. It seems that Petty struck it from "You Don't Know" and it eventually ended up in "Crawling Back To You."

Today I learned something new about a lyric that's lived rent-free in my head for 30 years

https://www.youtube.com/watch?v=D-g_THmIqI8