 Prado seems to have learned his lesson after a talk with Dexter, but Dexter later begins to doubt the authenticity of Miguel's friendship when he learns Miguel used exactly the same language he used in a talk between them in a talk with Rita about trust.Dexter's suspicions are confirmed when he examines the shirt Miguel gave him after the murder of Freebo.The blood on the shirt is in fact cow blood, and Dexter realizes that Miguel has been manipulating him all along.