United Kingdom, April 1 -- Brandy has accused Boys II Men's Wanya Morris of "taking advantage" of her when she was a teenager.

The 47-year-old singer claimed in her new memoir Phases that she was just 16 when she began dating Wanya, who was in his early 20s, after they collaborated on Brokenhearted in 1994, but they tried to keep their romance under wraps, both because of the "scandal" it would bring and also because Brandy knew her parents wouldn't approve.

According to People magazine, she wrote: "I was in over my head. Sneaking around with Wanya and lying to my parents had become a constant. They barely liked the idea of me dating at all, and telling them about us was out of question.

"But it wasn't just about upsetting - or disappo...