Son walking down the aisle.

You don’t have to have anyone walk you down the aisle. It does seem a little odd that it’s super important to you that he walk you down the aisle if you don’t have that close of a relationship. I wouldn’t force him to do if he isn’t comfortable doing it and his reasons for not wanting to are his own.

View Quoted Comment We did have a very close relationship once, he doesn’t like my new fiancée that much... mainly because he doesn’t do anything or go anywhere or clean up after himself... my ex husband is his personal butler and we are very strict here about things like personal hygiene and grades. (He decided it wasn’t worth graduating HS and just decided not to) but he is the oldest living male in my family and I wanted him to somehow be a part of everything even if he wasn’t “in” the wedding.

I understand you are sad he doesn't want to do it, but I wouldn't keep trying to convince him or force him or anything, unless you want to risk your already-tenuous relationship. He is an adult and gets to decide (even if you don't agree with his decision).