Our fears about infidelity reveal a lot about us. And so do our reasons for cheating. This episode was produced by Kelli Wessinger and Hady Mawajdeh, edited by Jenny Lawton, fact-checked by Melissa Hirsch, engineered by Bridger Dunnagan, and hosted by Jonquilyn Hill. Jay-Z and Beyonce attend a gala in 2014 in New York. Photo by Kevin Mazur/WireImage. If you have a question, give us a call at…