This song doesn't register to me so much as make-up sex, but just a relationship where there is a lot of stress and not much free time. The narrator is trying to salvage the relationship from her irritability which may come from being over-worked, in addition to perhaps some mental or emotional instability. Staying up all night is trying to find time for each other to work through their problems, instead of just immediately separating. It might be a final plea kind of thing.
This song doesn't register to me so much as make-up sex, but just a relationship where there is a lot of stress and not much free time. The narrator is trying to salvage the relationship from her irritability which may come from being over-worked, in addition to perhaps some mental or emotional instability. Staying up all night is trying to find time for each other to work through their problems, instead of just immediately separating. It might be a final plea kind of thing.