I'm so sorry you are in the situation you describe. I can't even imagine what you must be going through.

Wish I had some great advice for you because I want to be helpful, but I am at a loss. People can be incredibly complex and their future behavior difficult to predict.

Even people who have been married for 50 years are sometimes greatly surprised by the behavior of those they have known and loved for so long.

Sometimes the good things we do to make things right can make things worse. Sometimes not. Sometimes doing nothing can be helpful. But sometimes not. It is so difficult to know what to do.

Passions too are often unpredictable. They can warm or cool. They can turn icy or spark into flame.

Psychology studies human beings "in general" but sadly people are always infinitely more than "in general." People are unique individuals. So what works in the abstract can sometimes be unhelpful.

It sounds like you have a very good heart and that you really care, so hopefully that will go a long way towards influencing your fiance.

I wish I knew more about everything in life. Hopefully other members here on the Forum will see your post and respond to it with more helpful words than my poor words.

You deserve a good life where you can have some peace of mind and joy of living. I hope things turn out for the best for you. I am rooting for you!