I'm not the one

I can't always protect you,
From harm coming your way
I won't always be there
Every single day

I can't pull us together
After drifting apart
It takes two for that job
And we'll keep drifting forever,
It just matters how far

I can't make you smile
Every time you frown
No matter how hard I try,
I won't be able to turn that frown upside down

We'll always be drifting,
Maybe for a short or long time,
It depends on how long we go
Without talking,
But I'm not the one
Who'll always be the first to say hello