I Must Have Been Out Of My Mind

I must have been out of my mind To ever let you go I must have been out of my mind To ever, ever hurt you so. I didn't know how much I cared Till you went and found someone new I look back at all that we shared And how your love was true. I know that as long, long as I live, baby You'll be my, my one regret Don't you know you had so much, so much to give That you're so hard, so hard to forget And now that I see, what you mean to me I wonder, I wonder why I was so blind The only answer can be I must have been out of my mind