Dear Customer (name blocked for privacy),
There is no entitlement based on co-habitation in non-marital and now non-civil union relationships.
Any entitlement would have to be determined by the court based on rules of contract law.
She has the right to sue for what she considers to be an equitable distribution based on a normal rules of equal partners in a contractual partnership.
YOUR PAYMENT AND BONUS IF ANY MAY BE TAX DEDUCTIBLE

Edward M. Johnson