End of an Understanding

[Verse 1]
Each time you hurt me you say you're sorry
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

[Verse 2]
I try to understand you're only human
And we all make mistakes every day
But there must be an end to understanding
And I know that I just can't go on this way

[Verse 3]
Don't you know that love and understanding go together
Ask too much of one and both will die
And there must be an end to understanding
And I know someday I'll reach the end of mine
And I know someday I'll reach the end of mine