The key to surviving your spouse's sexual addiction is to not only focus on getting the addict treatment but, also seeking treatment for yourself.
I know a woman whose husband is an alcoholic. It is her belief that she doesn't need to seek help for herself because he is the one with the "problem." Sex addiction, just like any other addiction causes emotional pain and devastation in the lives of those who love them. The addict may be the one with the "problem" but you can't respond to the problem without first getting your ducks in a row.
Whether your marriage survives your spouse's sexual addiction or not you will want to. To do so you need to educate yourself about the problem, seek a support group, align yourself with a therapist, set firm boundaries about what is and isn't acceptable behavior and, detach, detach, detach.