AceShowbiz - A new lawsuit against The-Dream has laid bare his alleged close relationship with Beyonce Knowles and the R&B diva's supposed tension with Rihanna. As suggested in the lawsuit filed by his former protege Chanaaz Mangroe, the record producer believes that Rih was jealous of his "sanctuary" friendship with Jay-Z's wife.

Chanaaz, who claimed the high-profile music producer "regularly used the success he reached working with Beyonce to excuse his violent, coercive, and manipulative behavior," stated in the suit that he promised to make her "the next Beyonce and Rihanna." But "in order to write songs for her, he needed to know everything about her, including everything that embarrassed her, upset her, angered her, and excited her - every single thought she had," he allegedly told the aspiring singer.

According to details of the lawsuit obtained by RadarOnline.com, Chanaaz said The-Dream told her "true songwriters and producers needed to operate in order to write the right song for each artist," adding, "Ms. Mangroe needed to 'belong' to him so they could become the next 'Bey and Jay.' "

The-Dream allegedly credited Beyonce's success to the "sanctuary" they had together, telling Chanaaz that their bond "allowed him to know Beyonce in a way that others could not and, consequently, he could write the best songs for her."

Mangroe claimed The-Dream explained that a "sanctuary" was "even stronger than a spousal connection because it was about 'art' " and required her "to disclose all of her secrets and thoughts and become 'trust partners' with him." He allegedly told her this was relationship he shared with Beyonce, claiming they were "so close that he knew about Beyonce's pregnancy before her husband, Jay-Z."

Mangroe also alleged that The-Dream "frequently pitted Rihanna against Beyonce," implying the "We Found Love" singer "was fighting for his attention and was frustrated that he was giving it to Beyonce instead of her."

"He said that Rihanna was begging him for good records but because of his special 'sanctuary' relationship with Beyonce, he saved them for Beyonce and that Ms. Mangroe could be part of that as well," she claimed.

The lawsuit further stated, "According to Dream, Rihanna was possessive over him and got angry when he worked with Beyonce. In an apparent effort to reiterate how grateful Ms. Mangroe should be for the opportunity to work with him, Dream told her that Rihanna would frequently send him flowers and other gifts."

"Dream reminded Ms. Mangroe that she better be 'grateful' that he was working with her because he was putting work on Beyonce's album on hold, and that if she wanted to reach the same level of success as Beyonce, she needed to become as close to or closer to him than Beyonce," the suit went on elaborating. "He said that meant that Ms. Mangroe should ask and follow his advice on everything, rely on him to be her main confidant, and limit her inner circle to only those people he approved of and trusted."

Chanaaz said The-Dream promised he'd "share the specific formula he used with Beyonce" if she "acted right," and promised her she would open for Beyonce's tour, "going as far to force Ms. Mangroe to diet and exercise excessively to prepare" for life on the road.

"Dream led Ms. Mangroe to believe through manipulation and coercion that if she allowed him to completely control every aspect of her life, they could create the ultimate 'sanctuary' that would surpass anything he accomplished with Beyonce or Rihanna," the documents read. "For a new artist, the thought of becoming the next Beyonce or Rihanna was obviously intoxicating, and Ms. Mangroe was willing to work as hard as possible to make her recording dreams come true."

Eventually, Chanaaz found out that Beyonce was not going on tour. "Ms. Mangroe started to realize that the dizzying whirlwind Dream had led her through was a mirage, and she started to fear that Dream never truly wanted to produce her record, but just wanted to control her physically and mentally," it's explained.

The-Dream has denied all allegations leveled at him by Chanaaz. "These claims are untrue and defamatory. I oppose all forms of harassment and have always strived to help people realize their career goals," he told the New York Times. "As someone committed to making a positive impact on my fellow artists and the world at large, I am deeply offended and saddened by these accusations."

Meanwhile, in a statement to Page Six, Chanaaz explained why she decided to speak up now. "Choosing to speak out about the trauma I survived has been one of the most difficult decisions of my life, but ultimately, what Dream did to me made it impossible to live the life I envisioned for myself and pursue my goals as a singer and songwriter," she said. "Ultimately, my silence has become too painful, and I realized that I need to tell my story to heal. I hope that doing so will also help others and prevent future horrific abuse."