Who knew turning 29, 39, or 49 came with more than just back pain and the urge to buy a flashy new car? According to relationship experts, these “age milestones” also come with a not-so-glamorous temptation to cheat. Apparently, when the cake candles go up, so does the chance your partner’s head might turn. But don’t worry, there’s an unlikely way to stop that wandering eye before it wreaks havoc on your relationship. And no, it doesn’t involve deleting their Instagram.