Hi Scott, Gender considerations aside, your sitch is very much like everyone elses here. I suggest you read through a few of the threads to see what people do. Read the boooks as well. You do however seem to have the instinct to emotionally detach, which is great. Although it may be also that you have entered the denial stage.
You husband seems to have sympotms of a mid life crisis, so read up on that as well. Its crazy time, thats true, with lost of confusion, cycling, ambivalence. Do not get drawn into his crazy world.
Its true that when this things happen, the rug gets pulled out from under your feet, and you will feel misreable, and as lost or even worse than your mate. You need to pause, take a deep breath, and think. Decide what you want - and set your goals. As for family and friends - it is your life, not theirs. Turn to them for support, for someone to listen, but the cchoice to hate, not forgive, break up is only yours. Many here have gone through the same things as you have and you will learn.
Take care and read on!
Me:49 H:45 D:12 M:14 T:18 Bomb: 6/26/10 EA: 9/3/10, fizzled out slowly, now ??? 11/5/11 Retrouvaille Finally piecing.... Its peaceful at last, but we got a looong way to go