Yes, beware of friends that have extra-marital A's. They almost always try to bring their friends into the same lifestyle. First, by showing how exciting, fulfilling and happy the A life brings. Then by pushing a wedge into your marriage and provide a sounding board to amplify even the smallest of disagreements. Followed by coaching how to hide an A. My W's "friend" went as far as setting up the first meeting between the OM and my W and planning double dates.
Beware of the "friend" who has had A's.
Me:49 W:45 M:19 T:22 EA confirmed and ended 8/2014 S:19,17 D:9,5