I make a great first impression... and little else.

I would actually really appreciate TQP's brand of "tough" on this subject, since I think I might be acting like a total douche.

So, rarely do I meet someone for the first time and we don't get along. I'm a really personable guy. A lot of people like me. But the problem is that after a certain amount of time, I begin to let my guard down and act a bit like "myself". I mean, I'm not a total flaming idiot, and I'm not mean at all, but I think I have a tendency of saying weird jokes, etc. People don't begin to hate me or anything, but they most definitely "deflate" their opinion of me. What was once really high is now pretty average, etc.

I've thought to just be more reserved, but I guess I'm not sure if repression is the way to go. Maybe this is just a question of how free/reserved one should be in public...

Anyway, I used to think that it was individuals I dealt with, but now I realize that it has to be me since this happens often, where it'll be great for a few weeks until I begin to let my guard down and suddenly we are either arguing in small doses (nothing amazing, but it's always different than before) or I sense annoyance on their part.

So I guess I'm asking: Do you know people like that (like me), who are really great until you get to know them? Have you experienced that yourself? Is it natural enough (at least on occasion)? And any specific advice on what I should do, precisely?

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