IMHO is that you can "pave" the way home and become the better option for him. You can not say something that will change his mind. "Actions not words" just like we say believe none of what he says and 50% of what he does. He will turn that last saying around to judge YOU. He would need to see consistent action on your part. In order for him to change his mind. That is why we say you must work on yourself.
You did not cause his MLC nor can you fix it. However the MLC'er is a truth meter. If he says something and it stings. It is something that you must work on.