DEAR HARRIETTE: My husband and I are going on our eighth year of marriage. Last year, we experienced indiscretion for the first time – to my knowledge, anyway. And as you can imagine, it was hard on us. My husband cheated on me with a co-worker. Apparently, it was a sort of work crush that spiraled. When I caught on, he claimed that they only fully crossed the line once. He also quit his job and g…