I think it's quite a common thing to do, I did it myself with my first T. I wished I hadn't though, after the fact, because she did live in a very flash house. I drove past her big mansion in my crap little car at the time, and just felt like crawling into a trash can and putting myself out for collection. I dreamed about it too for ages afterwards, her house would appear in my dreams in various different ways and it would torture me. No, i never told her, I would have died if she'd known. Maybe it was my guilt that led me to dream so about it. Even worse was when I told her about the dreams and she tried to interpret them - all the while I would sit there thinking, "oh how wrong you are - if only you knew how guilty I was you would understand these dreams a lot better".
Of course, it's probably counterproductive to keep such big secrets from T, especially when it affects the way you feel in the room... but no way did I want to 'fess up on that one.