Backstreet Boys’ Nick Carter has been sued for sexual assault and battery by singer Melissa Schuman.According to the court documents obtained by Rolling Stone, the singer claims that Carter used his fame and status to “gain access to, groom, manipulate, exploit, and sexually assault” her.Schuman was a member of the 2000s pop group Dream. She came forward in 2017 with a now-deleted blog post claiming that she was raped by Carter in 2003.