Former Dru Hill star Sisqo has been pay child support for a nine-year-old boy he is believed to have fathered with a 14-year-old Swiss girl in 1999.

According to the mother, who’s black and lives in Switzerland, she and her friends met Sisqo during a Dru Hill concert in Zurich ten years ago.

“After the concert Sisqo was [standing] with his band at the bar, we went over and talked to them,” she said. “Then everything went very fast.”

After their one night stand, the teenager learned she was pregnant by the then-20-year-old “Thong Song” star.

Although no DNA tests were performed, a Zurich district court has determined that Sisqo is the “presumed father,” The Basler Zeitung Newspaper reported on Friday.