Ciara engaged to Future after rapper suprises her with 15-carat diamond ring

File-This Aug. 25, 2013 file photo shows The Future, left, and Ciara arriving at the MTV Video Music Awards at the Barclays Center in the Brooklyn borough of New York. (Photo by Scott Gries/Invision/AP, File)

NEW YORK -- Ciara's future is Future: The R&B singer and the rapper-producer are engaged.

Future surprised the Grammy-winner with a 15-carat diamond ring over the weekend, their publicist, Chris Chambers, told The Associated Press on Sunday night. She was already celebrating her 28th birthday in New York when he proposed.

Future and Ciara have been dating for a year. No wedding date has been set.

Future is also a producer who has collaborated with Rihanna and his future wife. He's currently on tour with Drake.

Besides the recent hit "Body Party," Ciara's hits include "Goodies," "Promise" and "Like a Boy."