Dancing With The Stars champions Karina Smirnoff and Maksim Chmerkovskiy won’t be dancing down the aisle in holy matrimony, after all. Karina’s rep tells E! News that the ballroom pros, who spent the summer performing in the Broadway production Burn The Floor, have parted ways after nearly a year of dating.

Smirnoff, 31, and Chmerkovskiy, 28, became engaged in December and had planned on getting married in June 2010, but prolonged their engagement in July due to their busy theater schedules.

“I am confirming that they did indeed break up,” says a rep for Karina — who began dating her DWTS co-star after a messy split with former flame Mario Lopez.