The other day, I found myself texting three different moms back and forth about plans for Friday night. “Can the kids stay later?” “Who’s driving?” “Are phones allowed?” It felt like a full-time job just trying to coordinate one hangout. Meanwhile, my tween was trying to convince me that every single kid in her friend group was allowed to stay up until midnight and that I was “literally the only mom” making her put her phone away. That’s when it hit me: our kids were operating with a completely different set of rules depending on whose house they were at. At my place, phones get turned off at 8pm. At another mom’s house, they were allowed in the bedrooms all night long. One family was strict about curfew; another was more relaxed. The kids, of course, knew all of this—and played us against each other constantly. Sound familiar? That’s when…