"Don't spill your guts 'cos that's a mess that no one wants to clean up. Is this enough? My heart is stuck. This feeling is breaking me up." (he doesnt want her anymore) he literally said "breaking me up" and the dressing room part is that hes trying new things and getting a "shiny new beginning" after it and is "cordially inviting" her telling her to move on too i think its the second one, it sounds better">
well to me, this song could mean one of two things:
or
i think its the second one, it sounds better