Questione giuridica chiave
Whether the cantonal court arbitrarily excluded the costs of the husband's concubine from his budget in fixing maintenance
Decisione estratta
The exclusion was not arbitrary because, as a rule, a separated spouse owing maintenance has no duty to support a concubine.
Motivazione estratta
The Federal Court held that a concubine is generally not entitled to support from the other partner, absent special circumstances. Therefore, the husband could not reduce his financial capacity by invoking expenses for the concubine.