If you end up marrying a true believing Mormon, your marriage will be a threesome. Now learn about how all of your doubts can be resolved through apologetics. If you are an atheist or a non-believer, then let your date know, and politely decline the invitation. Ask her out on dates. She has to decide for herself what she believes, but you can definitely help expose her to new ideas. Having to be on your own on holidays is really difficult, and no one understands that "isn't your husband here. But that parent-child relationship was bound to change anyways as you become an adult.
Mixed races, however, are NOT tied into opposing beliefs and mixed races don't try to "convert" each other. Think of it as giving him a prompt, and now he gets to give his thoughts. I read every page of the CES letter, and it's definitely convinced me this entire religion is fabricated, but I'm sure she wouldn't even read it much less consider its points seriously. Of course we are talking abt kids and marriage all the time. The first time, the shrink said, "It is very common for a woman to divorce so their children WILL see their father more. Sorry man, but if I knew what I know now I would have cut my losses.
However her husband joined the church a few years after their marriage. If your relationship is moving forward, or she suggests doing something more expensive, it is not inappropriate for her to help pay as well. I love him dearly with all of my heart.
Good luck to both of you on working this out, and if you decide that interfaith marriage is something you can handle and your gentlemen turn out to be the right men for you, then welcome to the club. Chances are you can't though. I was definitely taking the "Tough love" approach because I've read countless times on this and other boards, how Mormons claimed that they were cool with their SO not being Mormon, and that they weren't, themselves, orthodox. I have had more than one girl, who I had definite chemsitry with, who the girl really liked me and we had deep and intense conversations as well as a real physichal connection to. When my nephews started looking at porn on computers everybody blamed me when it wasn't me.