First, you are not crazy at all. Second, I am not going to tell you to jump up and divorce him right away either. It's clear that you want to have time to think about this challenge and make up your OWN mind. Also, it's not a good idea to act too quickly. Instead you deserve time to investigate how to move forward through this challenge. You can talk to a lawyer so you can see what ground you stand on too legally. You should do that as soon as you can to prevent your husband from secretly pulling away money from accounts etc. There is the emotional, and that's hard, but it's also important to move forward in a smart way too and know your rights.

Somehow, in your conversation with your husband however, he needs to know that his choices are most definitely going to affect his/your children who are only in their teens and simply do not have the life skills to understand what's suddenly happening with their parents. Often, teens feel they are not even being thought about and their feelings are being ignored and maybe mom and dad don't even care about or love them. Often there are deep resentments that develop as well. Also, FEAR of what will this do to their lives? They WILL feel ABANDONED and that can affect them the rest of their lives. Your husband has to be told that. Also, your husband should know that these other women who KNOW he is married are actually SELFISH women who don't care to respect what pain they may be causing to his family, that's VERY selfish.

Also, just because you did not have your own job or career, it doesn't mean you are wrong. You chose to be a homemaker and a mother and to be there for your children. Perhaps you need to think about going back to school and making some changes in your own life. That being said, your husband will have to pay child support and probably alimoney too. He "can't" just walk away from his responsibilities.