My husband just told me that he had an affair. With another man. I feel like my world just ended. What do I do?

This is pretty serious - why did he tell you now? Was there a trigger? I guess You have 3 issues to deal with. 1. Is hub gay? 2. Why is he confessing? Is there something else going on (blackmail etc) and 3. Why he had an affair (regardless of it is a man or a woman). I am sorry you have to deal with this. I don't have any advice for you - but just words of encouragement to stay strong and a reminder that even this will pass.