Like stopdog I am also very careful with what I say in therapy... there is more left unsaid rather than things I say accidentally. I don't think this counts as blurting out but once I mentioned being gay, just in passing... T paused and said "wait, have you told me that before?" it turns out I hadn't but I didn't know that. It wasn't a big deal to me but for some reason it was to her. I guess she thought maybe I would have some sort of underlying gay trauma... I don't. (I'm lucky to be able to say that)