The couple is said to have parted ways because of their busy work schedules, which proved to be a great challenge for them, reported People magazine
The 'Dancing with the Stars' actress, 24, had spoken candidly in the past about juggling career and a relationship.
"It's a hard thing to do, especially when you're so caught up in your work and bettering yourself. I think at the end of the day you have to find a balance with what's really important," Hough had said.