My family has just endured a divorce, sounding similar to the one you say you are going through. The husband and wife team i would honestly have said were the most romantic and in love couple i have ever known.. so in love, always picnicing.. holding hands, just so sweet. Then one day he just left her for another woman. completely out of the blue.. and our whole family is still in shock.
I have now seen the wife go from being a strong, beautiful woman (someone who i held as a role model) to a twig thin, emotional wreck. she had pinned her hopes and dreams on this one man and he took it all away. It taught me never to let that happen to me, no matter what partnership your in you have to be true to yourself.. because you never know what is going to come around the corner.
Lookout i hope you stay healthy through all this.. it will be hard but i believe you are a fun, excitng, loving, talented and smart man.. and weather you work it out with your wife or not - you must stay true to who YOU are, and look after your health with utmost priority.
keep on truckin