Open marriage is a type of relationship where two people are married, but they choose to have a special kind of agreement. This agreement means that they can both date other people while still being married to each other. It is important that both people in the marriage are comfortable with this arrangement and that they trust each other and communicate honestly about it. Open marriages often include spending time with other partners, but it can also just be about allowing each other the freedom to explore different options without the pressure of ending their relationship.