you can say anything you need to say to a therapist. Legally, they cannot reveal any information said in the sessions,unless it is something like you are an endangerment to another person, then they have to breach confidentiality and warn the person in danger. Other than that, everything is very confidential. Some people tell therapists things they have never even told anyone or have even expressed externally. Think of him/her as a teacher. He/she will teach you how to solve any issues you may have. Good Luck!