by baigh » Sat Jun 23, 2012 7:19 am
Co habiting is the same as "common law man and wife"
Common-law marriage, sometimes spelled without a hyphen and also known as sui juris marriage, informal marriage or marriage by habit and repute; is an irregular form of marriage that can be legally contracted in an extremely limited number of jurisdictions and is universally recognized as a valid marriage.
Common law marriage should not be confused with non-marital relationship contracts, which involves two people living together without holding themselves out to the world as spouses and/or without legal recognition as spouses in the jurisdiction where the contract was formed. Non-marital relationship contracts are not necessarily recognized from one jurisdiction to another whereas common law marriages are, by definition, legally valid marriages worldwide - provided the parties complied with the requirements to form a valid marriage while living in a jurisdiction that still allows this irregular form of marriage to be contracted - as was historically the case under the common law of England (hence the name, "common law marriage").
http://en.wikipedia.org/wiki/Common-law_marriage