The 35-year-old singer and the Formula One star ended their five-year relationship in June.
Despite recently being spotted having a secret meeting at a London hotel, Scherzinger insists they haven't got back together, reported Metro online.
"We're just friends. Just friends. We just met up to speak that night. That's all," Scherzinger said.
The singer, who hasn't been seeing any other men since the split, says she is open to rekindling her romance with Hamilton, 28, but is keeping an open mind.