Remember it take two to work on your situation. Things will get better with time. You'll feel it when the time comes. I'm a similar situation with you. It's hard to breath or not thinking about the situation. But I've decided to make I and my daughter my main priority for now. I can't stop her or change the situation, so why kill myself over a selfish woman. Work on you and focus on the future you want for yourself. If your w comes back good, if not the situation will make you a better person.
One in three couples divorce due to extra marital affairs. A small percentage of these split couples go on to marry the person they have an affair with. Most will tell their ex that the affair did not cause their divorce, but rather brought issues to the forefront that hadn’t been dealt with before. During an affair neither of the participants engaged in the affair are thinking clearly, and this is one reason when couples split due to an affair there is often regret. The odds of having a successful marriage with the person you have an affair with are grimmer than the chances you had at being successful with your marriage. Despite this knowledge couples still cheat on their spouse, and they still opt for marrying their partner in the affair.