I get it; I just don't buy into it. She will be pressured and will likely shut you out. But, you will probably lose. That is the shit storm on the road ahead of you. Heavenly Father will give you guidance if you listen with an open heart and contrite spirit as always. I'll paste a URL with links to all of them at the end of this message. You should take all of the above advice to heart and follow it just in case, so you can make a smooth transition should it ever be necessary.
I appreciate knowing all you have mentioned since it gives me a bit of insight and some real good tips. If you are very much willing to accept and understand all of these, whether you are a Mormon or not, you can expect that it is fun to date a Mormon girl. I have been married to a doctor for 29 years now and think I have felt or experienced many of the worries expressed. If she is motivated enough to want to go on a mission, she will likely not settle for having a second class "eternal companion" you who is a convert or one who cannot be sealed to her for eternity.
I let her know I'd been reading on LDS. I have always worked full-time and no employers ever give you any lenience. Dont aggressively try to destroy her faith but bring up philosophical thinking points. No doubt that some will be valiant up on the other side of the veil, but just as sure there will others who will reject salvation because of their high mindedness. A lot of Mormons think that good people will obviously recognize the truthfulness of the church and quickly join. Even after that, the Church discourages youth from entering serious relationships before they are considering marriage. Take issues as they arise, rather than throwing away what could be a good experience for you and her based off of what might happen. Doesn't leave many options here though but better than constantly having them push the church on you until you either give in and convert or break up. And what you're saying about having a great night and then an amazing few days after before he disappears and you feel like shit again I also hate that he doesn't text me until he is ready to make plans again, although I did ask him to text me more often and he has gotten a little better about it. Can someone put some sense in me.
I'm really glad to hear a few of you have stories of happy interfaith relationships, or leaving the church together, so there's always a chance. I recall reading a talk from Elder Nelson in which he indicated that the church teaches general principles and does not spend time teaching exceptions to general principles. If you are willing to wait, then well and good; otherwise, it is best to move on. See her good qualities for what they are and see it as a good relationship to remember.