when we started, both broken hearted

Whenever I go to the washroom, I read everything girls wrote on the walls. I always wonder what compels them to write on the wall, and how they decide what to write. It reminds me of the silent debates we do in social studies, because then other girls add arrows to things written and add their own comments. Do the writers come back and check to see what's been written?

I would probably write,
"My heart pounds loud, but my brain thinks louder."