YES! I do this too. I spent a lot of time trying to figure out why. It feels fun & social at the time but ends with embarrassment & regret.
For me, I've nearly concluded that I do it because I'm no comfortable in the situation (for whatever reason) and my "Open Book" defense kicks in. Basically, for me I behave like an open book, but not really. Not emotionally. That comes later. If I appear open with everyone then no one really looks twice. If a book is locked, it's mysterious. People are more interested. However, if everything is "out" & in the "open," then no one really reads the story.
I don't know if this is anywhere near to the truth really but since I've concluded this, I've been much more reserved. In a good way.

BTW: I have to know why I do everything. I'm so analytical, I probably give my T a run for her money....(:

Hugs