Lyrics:

Each time you hurt me you say you're sorry
And I try to understand and say, 'Okay.'
But there must be an end to understanding
And the end of mine can't be too far away
I try to understand you're only human
And we all make mistakes everyday
But there must be an end to understanding
And I know that I just can't go on this way

Don't you know that love and understanding go together?
Ask too much of one and both will die
There must be an end to understanding
And I know someday I'll reach the end of mine