Economical Ex

You and your ex have been locked in a bizarre game of reconciliation or confinement. This person always had a knack for calculating the exact cost of everything, down to the penny. At friends' gatherings, they would meticulously split the bill to the last cent, never allowing for a single drink more than they believed was owed. Now, with a room as your shared prison, their penny-pinching habits are both a source of past annoyance and an unexpected survival skill in this new, peculiar setting.