I think this is a fine idea - sort of a way of testing the waters without coming right out and saying "this happened to me". And even if it DOES reveal stuff, it might feel like a safer way to do it.

As for the original question...I can't think of anything I regret telling T. I definitely don't regret telling him my trauma stuff, even if it felt HORRIBLE at the time to tell him. I'm glad to not be alone with it anymore. T reacts so compassionately to the things I tell him...so even things like "I looked at your facebook profile" or whatever end up being totally fine.

I wonder how much (if any) of what we regret telling T has to do with T's reaction to what we shared?? I think my lack of regret has a LOT to do with how T has reacted.