How Did I end up so alone?

How did I end up so alone?
That's the question that goes
through my mind every day

how did I end up so alone?
I keep trying to find out
but I can't find the answer

it's like every day
you take a step
further away from me

I used to be happy
but now I am only pretending
pretending to be the same

Nothing is the same
We used to be so close
and now we're miles apart

we were inseparable
but you found someone else
and left me

Will we ever be the same
inseparable, a team
instead of just you and me