I’m stressing out

So idk if I should fix my husbands papers like him to be legalized? We been together six years I know a lot of you are going to say well you don’t love him if you don’t legalize his papers y’all been together so long. But what do I do should I just divorce him.? Please give me some advice? The only reason why I don’t fix them is because his whole life is going to change and he might leave me go to Mexico and find someone else better than me. Yes I have insecurities.