Hip hop superstar Drake’s ex-girlfriend Ericka Lee, whose voice is featured on the popular Take Care track, is now suing Drake over royalties. And Lee says she has the text messages to prove that the rapper acknowledged her significant contribution. Ericka, filed the lawsuit in California federal court claiming that she and Drake worked on “Marvin’s Room” together and were supposed to split the profits. Apparently, Ericka hasn’t gotten paid and now Drake has a “case of the ex” problem.

Last year, Drake allegedly agreed to work with Lee on “Marvin’s Room” and split the proceeds. Lee says she was asked to record the song’s “hook” as well as the opening monologue that would serve as the thematic framework for a song about Drake’s yearning for an ex-girlfriend and how his fame interfered with his love life. “Plaintiff’s contribution is highly significant to the overall work,” says the complaint.

Drake supposedly acknowledged Lee’s contributions in text messages sent to her. One read, “U basically made that song.” Another read, “It’s s–t without you.”

Drake purportedly gave Lee credit as a “vocalist” on the song as “Syren Lyric Muse.” Additionally, the parties are said to have registered the sound recording at the  U.S. Copyright Office.  On July 11, Lee made a claim there, saying “My works and voice are used on this work.” About six weeks later, Drake’s label, Cash Money Records made it’s on claim, saying that the song authored was an “employer for hire.”

Lee reports that after the song was released, their relationship ended and got ugly fast. The two discussed meeting in Los Angeles, but it never happened. According to the complaint, Drake later sent a text message to Lee that offered her 2 percent of “publishing royalties.”

By November, Lee hired a lawyer, which allegedly caused Drake to make threatening phone calls. “What the f–k is your problem?” he said to her, according to the complaint, then offering her “4-5%” of publishing monies plus a $50,000 payout to go away.