A relationship can survive unequal contribution. What it may not sustain indefinitely is one person’s capacity being treated as an inexhaustible resource while the other person’s limits set the terms of the household.

Relationships
Reciprocity Is Not Measured on a Good Week
A relationship can survive unequal contribution. What it may not sustain indefinitely is one person’s capacity being treated as an inexhaustible resource while the other person’s limits set the terms of the household.
