What is Free Love?

Legal Definition
Free love is a social movement that rejects marriage, which is seen as a form of social and financial bondage. The Free Love movement's initial goal was to separate the state from sexual matters such as marriage, birth control, and adultery. It claimed that such issues were the concern of the people involved, and no one else.
-- Wikipedia
Legal Definition
a term from the 1960's meaning to cohabit and have a sexual relationship without being married to each other.