Were Mat and Tuon meant to end up together?

As the series went on I often felt that while they did fall in love with each other their two belief systems were two incomaptable and they would eventually part ways. Try as I might I cannot imagine Mat staying married to a woman who would ultimately be tring to enslave many of his frinds. I even had a theory that after the Last Battle they would end up going to war against each other possibly even after having a child together.

But of course with Jordans's tragic passing everything changes. And so I wonder if Sanderson felt they need to just pair them up together as a way of giving them an ending as he knew he would not be adding more to the universe he would instead be finishing what Jordan started. Thoughts?