I think it's like this:
Someone breaks up with someone else (great, vague language, let's call them a girl and a boy for ease) and their explanation is "you never tell me how you feel" etc. (speak, your mind you're always telling me I need to open mine) and the guy is just trying to explain that they really do want to stay together, and he's telling the girl "If you're listening this is how much it hurts" like he doesn't know if she even cares anymore.
I think it's like this: Someone breaks up with someone else (great, vague language, let's call them a girl and a boy for ease) and their explanation is "you never tell me how you feel" etc. (speak, your mind you're always telling me I need to open mine) and the guy is just trying to explain that they really do want to stay together, and he's telling the girl "If you're listening this is how much it hurts" like he doesn't know if she even cares anymore.