Am new in this forum and going through a similar situation, the only difference he adamnt that he does not want to work on our marriage, and asked for my work adress to deliver the summons.
Dont push yourself to the decision you are not ready for, MLC is a process and take this time to look work on yourself.Dont even focus on what he does or does not do. Go dark and GAL it. Dont be the one filing for a divorce, OW is nothing just a symptom and the relationship is build on cracked foundation between them and dont allow the affair to determine the end of your marriage. Growing up [censored] and is not easy at all. Once we all overcome this challange we facing intact whether having our spouses back or not, nothing will ever destroy us. Keep strong.