That's a silly question. I don't even know who that "true me" is. I think sometimes everyone discovers new thing about themselves.
Furthermore, the "true me" is not some fixed image but constantly evolving. Even if I played a character in front of someone (I don't, but for the sake of argument let's say I did), that would also be part of me. As long as I'm playing that character I'm positively affirming these actions into my subconscious, therefor changing who I am in that direction even. It's a kind of "positive hypocrisy" if you will. So my "self" is constantly changing.
Rather than anyone knowing my "self", people will just see more facets of me with more exposure. If this cuts off at some point, the facets they know might have changed or be less relevant, thus knowing less of my "self".
On a more superficial level: I don't play a persona for my family or friends. I also don't tell all my acquaintances all that much about my life unless it becomes relevant somehow, I just let their assumptions fill the gaps if it's important for them for some reason. That's kinda what you're asking, right?
