I know from my own experience that God has the answers and that He speaks to those individuals who humbly seek Him. If your date has been an active member of the Church who is following these moral guidelines, then she will not be willing to involve herself in a sexual relationship with you. I wouldn't end a relationship with her, just as I wouldn't deny someone a job, or refuse to socialize with someone who is a Mormon. And the longer you see her you won't be getting out of anything soon either. Between kids and his work and his being asleep in the living room chair, there is no communication.
If I catch you in the back seat trying to pick her locks, I'm going to send you back to mother in a card board box. My parents met when my mom was in 8th grade and married when she was I think my sister married fastest and knew her husband at least 18 months, dating for at least half that. Many Mormons stick to a small group of friends within the church. No I dont think so.