Monogamy is the fact or custom of having a sexual relationship or marriage with only one other person at a time. Learn more about monogamy in different contexts, such as biology, religion, and culture, with examples and translations. Monogamy is the practice of forming romantic relationships with only one partner at a time, as opposed to having multiple partners at once. A monogamous relationship is a relationship where two people date and have sex with each other exclusively, and they don't share this type of connection with anyone else outside the couple. There is romantic, sexual, and emotional exclusivity between them. Learn about the characteristics, advantages and disadvantages of monogamy , the most common form of marriage in many societies. Compare it with polygamy, a practice of multiple spouses, and its causes, types and implications. Monogamy means having one partner at a time. Polyamory is having multiple romantic relationships. Learn more about monogamy , polyamory, and what they mean.