Q. My wife’s ex-husband is a contractor and very handy. I am not. We have been married for five years and she still calls him to fix the hot water heater or repair a hole in the drywall. I would love to just hire someone but with COVID-19, I have been out of work and hot water heaters are expensive. He does it to keep the kids safe and warm, I get it, but it’s demoralizing, and I hate it. What’s good ex-etiquette? A. I’m relying on math here. You blame this situation on COVID-19. But COVID-19 has only been around for two years, and you said you have been married for five. So this was a problem…