The Saturdays star was out with bandmate Una Healy, after reports have said she’s dating prince Harry.
King ignored the questions and kept walking past the paps, while Healy was reportedly giggling.
King has also avoided the topic on Twitter, only posting on her account about Easter eggs.
She said: “Anyone else STILL tucking into their easter eggs? ;-)”
A source told the Daily Express that the couple were “head over heels” with each other, but were attempting to keep their relationship quiet.
The singer first met Harry at the Asprey World Class Polo Cup in Surrey in 2010, and the pair were recently spotted enjoying karaoke and cocktails at Bunga Bunga bar in Battersea.
Their song choices included Jay-Z and Adele.
King split from model David Gandy two months ago.