This will probably surprise a lot of us who have lived in the RGV for many years and watched multiple marriages crumble, and that was before the age of cell phones, but according to a study recently published by MyDatingAdvisor.com, released to media outlets across the U.S. last week, McAllen (really, all of Hidalgo County) is the ninth most faithful city in the U.S. when it comes to adultery, or the lack thereof.Of the 421 metropolitan statistical areas (MSAs) in the U.S., MyDatingAdvisor.com compared 200 of the largest and ranked them among the following categories: relationship satisfaction, life satisfaction, cheating ...