This is the L.A. neighborhood you want to cheat on your own neighborhood with. There are, as there always is with philandering, many reasons you may find yourself stepping out on your own ’hood. Maybe it reminds you of your very first neighborhood, with its Main Street, Anytown, USA, feel. Maybe it’s you know, convenient and uncomplicated, the accessible, shoppable equivalent of hooking up with a hometown honey in the big city. Larchmont never asks too many questions, Larchmont makes you feel seen. And, most of all, good old familiar, reliable Larchmont, even when it changes its look or tries to get fancy, always seems to have what you need — even when you don’t know you need it. I say this as one of those cheaters. Even though we broke up almost two decades ago when I moved a few miles west (why is it always west?), it’s still where I go to get my prescriptions refilled, have my eyes checked and score the occasional slice of practically perfect pepperoni pizza (from 27-year neighborhood …