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I think you're making too big of deal over this. First, let your friends get excited over something your making. I wish I had more friends that would encourage me in this fashion.Second, there is nothing wrong with seeking help/comments/research from a forum of similar minded programmers (such as this one). Keeping things 'tightly under wraps' is necessarily a good thing (though, it can be). If anything, we could probably save you months if not years of design mistakes. When I started, I was very afraid of others stealing my idea. Now, I've come to realize that I almost couldn't pay someone to take my idea and run with it. I also realize that good game design is much more difficult than it appears.
I dislike people rabidly wiating for somtehing to come out.
I know i'll always dissapoint some, i'll anger others, and yet still some will just completely be disgusted with me