The Two Month Mark

What is it about the two month mark in a relationship that things get weird? Its an awkward unknown type of weird. Leading up to the two month mark, he's doing everything right, you are feeling great about things and then all of a sudden either he pulls away a little or you feel insecure and there is this weird tension. At least that seems to be what happens to me. This is a very bad cycle because when the man pulls away to test the waters or test the girl, the girl has two choices either continue acting the same, which could push him away or pull away herself with the hopes he will then do all the work again. Dating is a dance and for the first few months of this relationship, I was relieved that there were no games and everything was so easy. Now, I am questioning if my being so available is leaving him to lose interest. Maybe I should have followed "The Rules" and only hung out three days a week instead of 5!