SALT LAKE CITY — For years, Matt Duff was an uber-Mormon.
At 17, he ran away from home and moved in with the only black Latter-day Saints family in his New England town.
Two weeks shy of his 18th birthday, he joined the Utah-based Church of Jesus Christ of Latter-day Saints.
By 19, he was on a Mormon mission in Denver, and two years later he enrolled at Brigham Young University-Idaho, where he met his future wife, Kylee, a multigenerational Mormon with a winning smile and a guileless faith. The two married in the Salt Lake LDS Temple.
Eight years and three children later, Matt Duff stopped believing.