Actress Song Hye-kyo is not in a relationship with actor Song Joong-ki, her agency said Monday, ending rumors that the "Descendants of the Sun" couple is an item in real life, too.

"Song Joong-ki is her good colleague with whom she's done a TV series together," UAA Korea said in a statement.

The two Songs star in the KBS 2TV series in which the actor plays an Army captain and the actress a doctor. The two fall in love as they try to save lives in the fictional war-torn country called Uruk.

Speculations over their relationship have abounded after an anonymous Internet user claimed to have seen them shopping and dining together in New York.

Regarding the New York story, the agency said, "There's no need for us to consider it seriously. We'll take it as a sign of fans' interests."

The agency was less forgiving of rumors that the actress has a "sponsor" to whom she offers sex in return for career-related favors.

"The rumors about sponsorship have already been disproved by prosecutors in 2013," the agency said. "We don't understand and can't tolerate that they're recirculating."

UAA Korea said it has filed a complaint with the police accusing several Internet users of spreading malicious rumors and asked law enforcement to track down the rumors' source. (Yonhap)