Just because you are paranoid doesn't mean that your wife isn't out there cheating. This is exactly how my W started out: posting messages on chat boards, enlisting total strangers on a pen-pal site and telling them that our marriage was "on-the-rocks". She was out there looking. At that time, she hadn't found what she was looking for (that came a few months later at a class reunion). In your case, now is the time to start DBing in earnest. Do it before she finds her sole-mate and you are trying to keep your marriage together as an also-ran.
Me40 WAW37 M18 T20 S18,14 D13 EA Bomb 6/08 Sep 11/20/08 Ret 08/09 Sep/Filed 11/09