I keep a close watch on this heart of mine, Keep my eyes wide open all the time, Keep the ends out for the tie that binds, Because you're mine, I walk the line. I find it very, very easy to be true, Find myself alone when each day's through, I'll admit I'm a fool for you, Because you're mine, I walk the line. As sure as night is dark and day is light, Keep you on my mind both day and night, You give me cause for love that I can't fight, Because you're mine, I walk the line. I keep a close watch on this heart of mine, Keep my eyes wide open all the time, Keep the ends out for the tie that binds, Because you're mine, I walk the line. Because you're mine, I walk the line.