Rapper Megan Thee Stallion has made serious allegations against Klay Thompson, a player for the Dallas Mavericks, claiming he cheated on her. This accusation has sparked rumors on social media linking Thompson to Lexie Brown, a 31-year-old guard for the Seattle Storm in the Women's National Basketball Association (WNBA). Despite the viral speculation, no confirmed reports have identified Brown as the alleged other party. The rumors appear to have started from an unverified account on social media, which claimed that Brown was sharing messages with Thompson, suggesting that his relationship with Megan was merely for show. Megan's allegations included a revelation that Thompson expressed difficulty with monogamy, stating, “I cannot be monogamous.” The couple, who began dating in July 2025, has not been seen together publicly in recent weeks, further fueling the rumors.