The reality is that while God gave us a gospel of love and stands always ready to give us a helping hand, his mercy will not rob his justice. I have known many women who have married non-members and are happy. It may not seem like a big deal now, but eventually it will probably surface that at best, the church impacts and influences her behavior in almost every area, at worst, it dictates it.
There's a picture of the magic rock he found while digging a neighbor's well. But marriages don't last if you have to hold back ugly, sarcastic comments when your partner attends religious services or defends religious beliefs. Sounds like classic "flirt to convert. Dude just to summarize what I think is the majority of the comments. In truth if I had a chance to "do it all again" type of thing.
I fear the idea of growing to resent him. What would your relationship look like if you were to marry. Again, I deeply love my dad, but these were things that I had to deal with. However, a few months before her exams she suddenly said that she didn't think we were right for each other and broke up with me. When my daughter needs challenged in soccer, I took her everywhere, I studied vocabulary list with them, wrote essay with them, math facts…….
She honestly believes that she has the truth, and that if you are exposed to it enough you will recognize that. Read our Exit Stories from Mormonism. She needs to be, and maybe she will get there. He's a big boy and can make up his own mind.