In ancient Greece and Rome, marriages were private agreements between individuals and families. Community recognition of a marriage was largely what qualified it as a marriage. The state had only limited interests in assessing the legitimacy of marriages. Normally, civil and religious officials took no part in marriage ceremonies and did not keep registries. There were several more or less formal ceremonies to choose from (partly interchangeable, but sometimes with different legal ramifications) as well as informal arrangements. It was relatively common for couples to cohabit with no ceremony; cohabiting for a moderate period of time was sufficient to make it a marriage. Cohabiting for the purpose of marriage carried with it no social stigma.