Who Am I?

I miss you now,
I miss you then,
I miss you every single second,

I don't know what I am doing,
I don't know where it is I'm going,
I don't know how it is I'm living,

I'm not sure what I'm going to do,
I'm not sure how it is I will survive,
I'm not sure when I'm going to be allright,

Pretty much what I'm trying to say,
Would be that without you,
I don't know who I am.