Marriage to the right person is wonderful. 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. I found that it worked just as well. It's been really helpful already.
It CAN work, to be frank. If he is luck to be off call during the weekend, I would sleep most of the weekends away to make up the sleep deprivation. This is not about either of you individually. That is a goal worth fighting for. I don't care about the money, I have suggested him to downsize if needed for him to work less. He's a big boy and can make up his own mind. Marrying a non-Mormon is not something you do it is something that happens. We have known each other for many years. And their feelings about your marriage are their businessвnot yours. While it's true that Mormons are not one-dimensional and completely predictable, the odds of a successful relationship, given the OP's description of his girlfriend, are slim.
Pretty alarming how unsophisticated so many presumably well-educated people's expectations are of marriage. My Buddhist husband likes Mormons and even going to church. I don't know why the system allows this type of treatment Not only do the residents feel like they "should" be giving every single bit of their energy, intellect, passion, soul to their residency programs, but they are told by their program directors, attendings and everyone else around them that they "must". Having to be on your own on holidays is really difficult, and no one understands that "isn't your husband here. It's in the Mormon DNA. See her good qualities for what they are and see it as a good relationship to remember. It has to do with their character. My husband, regardless of religious affiliation, is a beloved son of our Heavenly Father who is very much worthy of my love, affection and dedication.
I have this brain trapped after all these years. My mom works in the medical profession, and it was always hard when she was on call or had to work late, but she definitely works hard. I've been holding out, mostly contentedly, for a time when we could appreciate each other as unique individuals. And the thought of being a 'single mom' if we have kids. Also, they are encouraged to date in groups and not pair off alone, so if your date insists on the same, then agree politely. I have missed the Church in some ways, and certainly the blessings of a temple marriage. His hospital "family" protected this information well, silently acquiescing and even approving his behavior. You can and should share with her why you don't and never will believe in the Mormon church, and let her decide for herself, but be prepared to have that blow up in your face. And of course, everyone has a different experience. Who knows, maybe a little lighthearted texting is just the 5 minute break he needs.