You're lost inside of me

You were me, I was you
We had other friends, too
Jumped in carelessly
Sharing our secrets
Knew you were my weakness
Making same mistakes
You're lost inside of me
And now I set you free
We're broken apart
And you've played your part
You're sixteen forever
Think you know better
Blissful lullaby
Whatever they're saying
There's not much worth savin'
Time to say good-bye
Your life is black and white
I'm not that colorblind
Enough is enough
It left me in half
Looking in the mirror, you are staring back
Gotta make it clear, I can't go on like that
Filling in the gaps, I need to recollect