I think hiding your feeling takes a lot of energy to do, at the same time your needs aren't being meet, or I should say things that are bothering you aren't being resolved. I think it is quite possible to hide your feelings. I've had depression for over ten years and my wife didn't really pick up on it. When I started to feel down and hopeless I would throw myself into school. If that wasn't an option I would just sleep and sleep. I finally told my wife how bad I was feeling and my struggle with depression. I don't know if it doing any good or not. I don't feel any better about things. I find therapy helps. I would suggest be as honest with your T as you can. I think that is the only way to get down to what is bothering you and make improvements in your life. To face the issues that are hard to cope with or challange some of the thoughts that add to depression.