SEOUL-- Joy of girl group Red Velvet and R&B singer-songwriter Crush are officially a pair, their management agencies said Monday.

"The two were colleagues but recently began dating," Joy's management agency, SM Entertainment, said.

Crush's agency, P Nation, made the same statement.

The couple collaborated last year when the 24-year-old songstress featured on "Mayday," the first track of Crush's single, "homemade 1."

Joy released her debut solo album "Hello" in May and a new album with Red Velvet last week titled "Queendom."

Crush, 29, has been fulfilling his mandatory military service since November.

Source: Yonhap News Agency