Thumb Over Send

You said the worst, I said worse, we slammed the door.
I was loud, and I was wrong, I know that now.
I carried the blame for years, I'm done with how.
It's only a hello,
Nothing more; we both know what we did before.
If you don't answer, I'll understand,
But I'm holding my breath with my whole hand.
So I hit send and watched the words go out,
Then I stared at the screen and started to doubt.
Hey, it's me, I miss who we used to be.