by Chelsea StewartBuzzFeedBuzzFeed StaffI'm Chelsea, the Weekend Editor at BuzzFeed, where I cover everything from pop culture and politics to TV and celebrity news. Megan Thee Stallion had a tough moment onstage following her split from Klay Thompson. Momodu Mansaray / Getty Images The rapper appeared to hint at the split yesterday after almost a year of dating, alleging cheating and poor "treatment" on Instagram. Johnny Nunez / Getty Images "Cheating , had me around your whole family playing house...