How do I prove that my spouse committed adultery?

In order to obtain a divorce based on the grounds of adultery, you must prove that your spouse had the disposition and opportunity to commit the act. Circumstantial evidence is allowed to prove the adultery so long as it establishes both the disposition and the opportunity to commit the act. Private detectives, e-mails, photographs, and testimony from the paramour can all be used to establish the ground for adultery.