Maksim & Karina Split!
The pair, who just last month gushed about how they do everything together, have broken up after about a year, Smirnoff's rep tells PEOPLE.
"I can confirm that this is true," the rep says. No reason was given and the rep says no further statement would be issued. Chmerkovskiy's rep didn't immediately comment.
Smirnoff, 31, and Chmerkovskiy, 28, who became engaged in December, had planned on getting married in June 2010, but prolonged their engagement in July because of their busy Broadway schedules.
"We're not rushing," Smirnoff said at the time. "As long as we're together, tying the knot is a plus, it's something extra."
The split was first reported by E! Online's Marc Malkin.