Who Do I Think I Am

Who do I think I am
What made me think that I could live without her who do I think I am
What made me think that she couldn't forget me who do I think I am
Why did I tell myself I was her one and only
I should have realized and end up alone and lonely
What made me think that she couldn't find another who do I think I am
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Why did I tell myself...
Who do I think I am.