The Secret Lives of Mormon Wives star Dakota Mortensen went Instagram official with Shinia Powell – nine months after their illicit hook-up caused drama. The 33-year-old reality star and the 29-year-old influencer hard launched their relationship with a PDA-filled Instagram slideshow she captioned: 'Soaking up our last bit of summer.' Mortensen and Powell, who allegedly began dating in April, were all smiles while enjoying an excursion in the woods after attending a minor-league baseball game in South Jordan, Utah on July 23. The ex-friend of Miranda Hope also included several snaps of her daughter Sophia, six, and son Beckham, five –…