Infidelity: outlaws and in-laws and lesbian relationships

How does one define infidelity in lesbian relationships? Because lesbians cannot marry, they exist outside of the law. Do lesbians, like other "outlaws" create their own code of ethics? All relationships evolve structures in response to social constraints; we must beware of transferring normative assumptions to relationships that develop within their own culture. The boundaries of lesbian relationships are not as fixed as those of heterosexual ones, partly for lack of this legal recognition and partly because they have evolved somewhat in opposition to traditional marriage. Variations on traditional relationships and the different meanings they may hold for the women who create them are explored.