He had no idea what he was getting himself into. When I taught GD we discussd the lessons. This means holding hands while walking around, or even kissing. Before the cap inresidents sometimes worked hours per week. Pray about it and follow your heart. Would you rather give up the prospect of being married in the temple, the assurance of children being raised in the church, and parts of Mormon culture for your boyfriend, or a great man for your beliefs.
Love the way you normalize the challenges of being married. I admit it is sometimes depressing going to bed without him and getting up seeing him still studying but I am sure we will survive this. You would think surrounded by kids and being off every day would not be lonely but never having anyone to share your kids achievements with in person is hard. If you and she are sealed in a Mormon temple, your children will be can be sealed to you. I feel a sense of freedom would come with it, but I am also afraid of what this could mean for us in the long run. But, you will probably lose. Break up with her. If everything she is taught is correct and the Mormon church is "true" she should be able to research any anti-Mormon books or movies and prove their criticisms are lies.
Note, her mind and TSCC were married first. A lot of shared hobbies, interests, life goals. You can also attend their singles conferences, or participate in social activities organized by the Church. It has nothing to do with their career.
When my husband and I were sealed, I finally understood why my Dad had been stressing this to me my entire life. That being said, there are some facets of the religion that you should be aware of that will influence how she approaches both you and the relationship. If this is someone you are to marry, then the rest will take care of itself. You love a medical guy.
