How...?

How did we get like this?
How can it seem that we drifted apart?
I don't know how
I just know that this didn't have to happen

I could have stopped it
I saw this happen
How could I let this happen?
Why didn't I stop it?

How can it be the way it used to be?
How can we get that back?
I want to go back
This is not how I wanted it to be