Is he having a MLC?

[KarenR]

Hi, I am so sorry for what you are going through. I know it must be very painful. There is not a simple answer that caused the relationship to go off track, as there usually long term underlying issues that haven't been addressed, and solutions that weren't discussed. This is where talking to a DB coach would be extremely insightful and help you come up with a plan of how to go forward. I would look forward to discussing this with you further. Take good care.