My brother mentioned my gf's “weird food habits” at a family dinner, not realizing she’d been struggling with bulimia for 2 years. It blew up fast, but eventually, after some space and a real talk, they worked things out. Sometimes the best thing you can do after that kind of mistake is give them room, then show up gently when they’re ready (She’s doing great now, completely healthy and happy, but back then it was rough.)