Confusion With You

You wer the only thing I lived for,
You were the only one I loved,
But then you left me,
I thought I was going to die,
I still loved you with all my heart,
And I didn't want to have to give up on you,
But eventually I did,
Then you told me you loved
me, and you wanted
me back,
So I took you and now
I'm second guessing my decision,
I said yes because I loved you,
But I don't know if I can
take this relationship,
I should be happy that I am with you,
But I don't know if I am.