Why do I tend to bring people in just close enough for my own curiosity of wondering if I can and then as soon?

This may be the saddest thing I have ever heard! It's one thing to "put up a wall" to keep people away, but to purposely draw them near only to find flaws.....and then dump them.....well, that is just rude. Prepare to die alone, you will never have good relationships or good friends.