The contract I am proposing is simply one where the two ppl agree, in legal terms, to combine their finances and lives to be recognized as”one entity”for matters of tax and business and credit purposes. There does not need to be any recognition of marriage. ANY 2 people should be able to take the money they earn and the lives they build and combine them with any other people they choose. Businesses do it all the time, it’s simply a merger. Courts settle disputes on business contracts everyday.