I walk the line

I really like the first verse of this Johnny Cash song. It should be the attitude of all married people. It is so easy to get attached to someone else if you're not careful and vigilant.

I keep a close watch on this heart of mine
I keep my eyes wide open all the time
I 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
I find myself alone when each day is through
Yes, I'll admit that I'm a fool for you
Because you're mine, I walk the line

As sure as night is dark and day is light
I keep you on my mind both day and night
And happiness I've known proves that it's right
Because you're mine, I walk the line

You've got a way to keep me on your side
You give me cause for love that I can't hide
For you I know I'd even try to turn the tide
Because you're mine, I walk the line

I keep a close watch on this heart of mine
I keep my eyes wide open all the time
I keep the ends out for the tie that binds
Because you're mine, I walk the line