I was not sure...

I was not sure but I believed you were my friend,
I was not sure but I helped you as much as I could,
I was not sure but I hoped you thought me a friend,
I was not sure but I called you thinking you liked to talk to me,
I was not sure but I always tried to be part of your life,
i was not sure but I went to you when I was upset,
I was not sure but I tried my best to be like you wanted,
I was not sure but I had sleepless nights cause you were unwell,
I was not sure but I was always there when you needed me,
I was not sure but I put you above all,
I was not sure but I cried for you,
I was not sure but I waited you so long,
I was not sure but I kept coming to you.

Now after all these,
I am sure it was all my fault,
I am sure it was just my misunderstanding,
I am sure I will always laugh at me,
I am sure I won't change and will keep doubting myself.