The important thing is whether or not your spouse will support you in your endevours to live your religion. I have been a doctor's wife for almost 2 years - and we have been together for about 7 years, since right before intern year. I wouldn't just give up, but be wary. The Church encourages people to be a good influence on one another, and she will probably expect you to dress well for her. Marriage to the wrong person is extremely difficult.
As Joanne mentioned, should you marry interfaith, you will have lots of help from fellow ward members on converting your spouse. Ask her rhetorically if she would dump her religion for her true love. At what age do you baptize.
It sounds like you have found a good one. Your crush might put a lampshade on her head and call it innocent fun. Of course it is impossible Anyways, I am sorry to go on and on. One red flag I have for Mormon girls is if they drink coffee. Sexually, risque and the such is essentially the same as baptists and fundamental Christians. At least people of different races are aware of those differences, and are on alert to deal with them. But his absence in the spiritual side of my life, and that of my mother, was very hard.
Do you really love him, honey. This usually works out great. After a certain point "support" stops being supportive and turns into enabling - enabling of his depression, his anxiety, his reluctance to reflect deeply on who he is and what he wants out of life, and worst of all, my "support" ensures his continuation into a career that will not ultimately make him or me happy. I understand that, and accept that. Log into your account.