Casual dating or a casual relationship is a physical and emotional relationship between two people who may have casual sex or a near-sexual relationship without necessarily demanding or expecting the extra commitments of a more formal romantic relationship. Motives for casual relationships vary. There are significant gender and cultural differences in acceptance of and breadth of casual relationships, as well as in regrets about action/inaction in those relationships. A casual relationship is sometimes referred to as a "no strings attached" relationship.