It's gonna end regardless not trying to be a dick, but that is what is going to happen eventuallyso be smart and cut your losses before it gets harder. You can't provide that for her so your marriage will be defective from the outset. Does he have a faith similarly conversion-focused as I could see that being a challenge. There are many catholic families with these three main ethnic groups within it. But she probably is more in love with the idea of you, than with you. The first time that happened could have been viewed as a warning sticker, and been your cue to exit stage right. No one understands our lifestyle or how difficult it can be, not even my best friend and or family members no matter how hard they try to. You won't know this until you do it and that is really important information to get before a marriage contract. If you are willing to understand and accept these, whether or not you are a Mormon, you can have a fun time dating Mormon girls. This can be done.
On the other hand, if you believe God is bigger than we can imagine, and is not constrained by religious dogma, you have as good a chance as any at a happy, thriving relationship. Like you I grew up with and taught the standard LDS beliefs about temple marriage, celestial kingdom, etc. You've all been so helpful. He want to wait at least one year before he makes any decision he want to take it slow. In my experience, life-long member, many Mormons have difficulty thinking outside the box, and putting forth effort to inclue and love. There are many good things. The "loneliness" is not an issue for me. Good thing is you can have multiple wives in heaven if you become exalted. I hate to say it, but if you are serious, go explore her world.
Religious affiliation is not the only criteria when selecting a spouse. And frankly, you feel like such a loser. It should be our time with boys. It's the 1 issue in our relationship. And he needs to trust his instincts if he thinks she's being dishonest. I do not see this going well. At the end of the day, nothing I say or do can help him see this. This can keep the relationship from getting too exclusive, and spending time with more people can give you a wider variety of things to do.
I believe strongly that I was meant to marry my spouse. Of course I feel slighted at times, but I check myself and remember that my SO is doing his best given all his demands. You can't force her to change, nor should you if you could. They have money for nannies, trips, vacation homes, their children go to the finest colleges, etc. I don't think so. That is a hard truth.