His dirty little secret isn't a secret anymore!

Usher allegedly paid an unidentified woman $1.1 million to settle a lawsuit after infecting her with herpes, Radar revealed in a bombshell report. The singer was thought to be diagnosed with the STD around 2009 or 2010, but didn't disclose his health status and proceeded to have unprotected sex with the victim.

The woman claims Usher "consciously and purposefully" withheld his medical issue from her and told her he was negative for the virus, despite her observation of "greenish discharge" coming from his penis. TMI!

The woman came down with vaginal sores, fevers, and chills and ultimately tested positive for herpes. She “feels that her health and body have been ruined” and “has suffered severe emotional distress and has been extremely depressed … knowing there is no cure," the court papers state.

California law states that is illegal to knowingly or recklessly transmit an STD to another person.

The "Confessions" crooner should have done some confessing before hopping into bed with this poor girl!