Kernrechtsfrage
Whether Art. 4bis(1) GIVU is unconstitutional for treating cohabitant income like step-parent income in alimony advances.
Extrahierter Entscheid
The provision is capable of constitutionally conforming interpretation and is not arbitrary; it may include income of a stable cohabitant.
Extrahierte Begründung
The legislature had a rational basis to prevent preferential treatment of cohabiting couples over married couples. But only a stable cohabitation may justify income attribution; a rule covering every shared household would improperly erase the difference from step-parent situations.