Usher filed for divorce from his ex-wife Tameka Foster in 2009 but in an exclusive interview, she denies accusing the star of using drugs during the custody battle over their sons.
Star magazine reports she previously said, yes the singer popped pills in front of their sons, she has since denied making the claims as well as requesting he take a drug test.
She told the magazine, "I never accused him of drugs. My attorneys requested the test, not me. I'm merely in defense mode."
In the lawsuit, Tameka pointed out Usher failed to get persmission to hire nannies, take the kids on vacation or watch them over breaks. She explained, "He started this, I didn't. My kids are my life. I'd never compromise."