Peter Marshall didn’t know that the woman sitting next to him—his “favorite person”—was already his wife. Suffering early onset Alzheimer’s, the 56-year-old man from Connecticut had fallen in love for a second time. Not remembering his wife, nor their first wedding, Peter had done nothing short of proposing again; and the pair actually went ahead and renewed their vows in a ceremony late April. Despite her husband’s heart-shattering diagnosis three years ago, Lisa considers herself “the luckiest girl in the world.” “I get to do it twice,” she told NBC, referring to their matrimony. But they have ridden the full gamut of emotions over the course of their journey through his Alzheimer’s. The couple, married 12 years, got his diagnosis in April 2018. The Alzheimer’s progressed rapidly, destroying most of Peter’s memories of the past; for the couple, “in sickness and in health” is not just a promise made, but one that …