Big mistake

I didn't want to say goodbye
I really didn't want to
But all my friends said "he's to young"
But I really did still love you

I told you I was over you
And that I had moved on
But I cry myself to sleep all night
Cuz now my lover's gone

I made a big mistake that day
I should've listened to my heart
And now that you are over me
We've grown so far apart

I've learned from my mistake
But you still have my key
The key to my heart that is
Please come back to me