Minn. Stat. § 513.075: COHABITATION; PROPERTY AND FINANCIAL AGREEMENTS.

If sexual relations between the parties are contemplated, a contract between a man and a woman who are living together in this state out of wedlock, or who are about to commence living together in this state out of wedlock, is enforceable as to terms concerning the property and financial relations of the parties only if:

(1) the contract is written and signed by the parties; and

(2) enforcement is sought after termination of the relationship.