So if you feel like you both are getting serious, then talk to your girlfriend in time and sort this issue out. My current atheism bothers him a little but as long as we respect each other it's fine. I have no support system; you are so fortunate to have weekly dates with your DH. I don't think people really understand how lonely it can get, unless you are married to one. Have lots of sex. I do hope I'm able to make the necessary sacrifices to make my marriage work. If kids ever came into the picture though, I wouldn't want to be isolated from them psychologically or banned from walking my daughter down the aisle someday. You guys are looking into this wayyyyyyy too much. He isn't in school and doesn't have much idea about what it is like to be in my shoes.
I hate to say it, but if you are serious, go explore her world. If I were you, I would just nope out of it and move on. She never mentioned TSCC.
It was actually causing more of a rift than bringing us together. Break it off amicably now, before it gets too difficult. My advice would be to date him when he has free time. Do whatever it takes to at least learn from your relationship with your Mormon crush. God brought the two of us together, and we are truly in love. There will be struggles in marriage and childrearing whether or not he is a member. That's our best option.