Justin Bieber's ex-girlfriend Selena Gomez sings 'Cry Me a River'

NEW YORK, Jan. 21 (UPI) -- Singer-actress Selena Gomez, who broke up with pop star Justin Bieber this month, sang the song "Cry Me a River" at a weekend concert in New York.

The couple called it quits after about two years of on-off dating.

"I've been through a lot the past few months. It's been weird and sad and cool," UsMagazine.com reported Gomez, 20, said at a private benefit concert for UNICEF. "This song definitely speaks to me."

"Cry Me a River" was a big hit for singer Justin Timberlake in 2002 after his split from longtime girlfriend Britney Spears.

UsMagazine.com said Bieber has also sung the song at concerts.