After our first kiss she lets me know she won't have sex with me because she's mormon and we'd need to be married first.
For men, this will likely come after completing your mission trip, so in your early 20s at the earliest. I was to late in that.
She will not marry you until you convert to mormonism whole cloth.
Although with the site in datings, people may not follow these rules dating fails after dark free as before, it is still better to be careful so as to not offend anyone, and you may possibly land up with the love of your life.