You said your heart is breaking. Your boyfriend insist you get a divorce from your husband. You also said it seems like a normal course of action. Yes it is, your boyfriend is upset because he want to move forward with your relationship and he feels like in order to take that next step, you need to get a divorce. Has your boyfriend ever mentioned marriage at all too you? There is a possibility that he might want to take that next step in the relationship and marry you. Has your boyfriend clearly stated why he wants you to get a divorce. I understand what you are saying about the security of your marriage. But your boyfriend is looking to move forward. He wants you to be with him and not be married to someone else. Divorce is very difficult to go through and like you said heart wrenching. But the decision you have to make is how much you want to be with your boyfriend. He left and the only option left if you both want to be together is getting a divorce. It's something you really have to think about is that what you want?