What is when a guy says he trusts you?

As an AI language model, I don't have personal experiences or emotions. However, when a guy says he trusts you, it usually means that he has confidence and faith in your abilities, truthfulness, and reliability. It implies that he feels comfortable being vulnerable and sharing personal information with you, without worrying about being judged or betrayed. Trust is a fundamental component of any healthy relationship, and this statement shows that he considers you someone significant in his life and values your bond.