I very well may be in your boat in a few years.
When we got married I was a cafeteria Catholic and he was a “Jack” Mormon (inactive). I have grown in my faith, and he has just sort of followed me along. He is not really interested in any particular faith right now in his life. He wants us to go to church on Sundays, but doesn’t really care which church we attend. He promised to raise the kids Catholic and he intends to keep his word.
His family is very Mormon. Our conversion is probably in their prayers every night. :shrug:
I know he could decide to “return.” But, he could decide to be Buddhist one day too, you never know. But given his family’s background, I made sure to study up on both Catholicism AND Mormonism. I know far more about both religions than he does.
My plan of action, should he want to be Mormon again is to joyfully walk that journey of faith with him. Not that I would convert, but I would sincerely roll up my sleeves and say, “Let’s figure this out. Let’s start studying Mormonism, Catholicism, and any other religions you want.” That would give me the opportunity to ask him probing questions, to point out areas where I see faults/differences–all within the context of genuine exploration, without me attacking or dismissing his family’s faith and heritage. I “think” if he really studied LDS beliefs (outside the feel-good confines of the LDS church-sponsered lessons), he wouldn’t return. Then again, that gives him the right to question me about my faith and that’s okay with me.
Side note: I just don’t think my husband will return. He’s never done anything *bad *in his life (a real goody-goody-ha!), but because he left the faith and (gasp!) didn’t go on a mission, I think Mormons assume he “did” something terrible. All he did was choose a different path (& fall in love with me). Having other people’s assumptions over his head, and being passed over for church “promotions” because of nothing, would (and did) really irritate him. I think in the long run, it’ll be hard for your husband to “live down” those choices he made (leaving &, I assume, missing his mission). IMHO Mormonism involves a lot of ranking people (every grown male is either a priest or an elder or a bishop, etc, you go to the top, middle, or bottom heaven, you have a temple marriage for eternity or just a temporal marriage)-- good luck to him trying to get back in the ranks of the “elite.” Just don’t let him turn the frustration he may face towards you or your Catholicism. Let him keep ownership for his decisions regarding his faith.