Being betrayed by your partner can induce rage. In your furious state, your first instinct may be to punish your mate by trash-talking him to friends (or worse, on social media), or think about having an affair yourself to get even. You may get a temporary sense of satisfaction from these sorts of actions, but ultimately they can work against you, keeping you in a state of anger instead of focusing on healing and moving on, alone or together. Think before you tell your family, as well. They will likely have strong opinions about what you should do leave or stay. But nobody else really understands what goes on in another person's marriage. While you are pondering how you're going to proceed, it's best to keep the details private.