I never knowingly had sex with a Mormon woman, and if any of them were Mormon, they had definitely fallen off the wagon, far!
I did have a Friend With Benefits that started to attend a local church and really started to get into it. I had heard of it before, did some research, and found it was close to being cult like, as they tried to ensure that you spent all of your time with other members, limiting contact with non-members except when trying to get them to join.
One evening she told me that it was probably going to be our last night of fun together as she was going to be baptized very soon. She was a highly sexual woman, with very strong sexual desires, which made me a very lucky man. We got naked and fooled around as usual that evening and the next morning. When we saw each other again (we were friends) over the next month or two, nothing sexual happened, but she did admit she really, really missed our sex together.
At some point a few months in, she came over my place and asked if she could stay over, sharing my bed as she usually did when she stayed. We stayed clothed, but cuddled as she liked being held while she slept. The sexual tension must have finally got to her as she started to really get into the cuddling, drawing my hand to her breasts. I happily started caressing her breasts over her pajama top, but that quickly turned into it being unbuttoned and her thrusting her breasts and nipples into my waiting mouth. I don't remember talking about her breaking her celibacy, but she was definitely hot, bothered, and horny! I ensured that she had a mind-blowing orgasm before slipping on a condom and enjoying her as I had in the past.
She didn't last very long in that church, as the demands of her time and what little money she had, was too much. I believe she accepted that she had always been a very sensual and sexual being, and wanted to express herself sexually whenever she wanted, with whoever she wanted. I was very happy to be a partner in her sexual expression!