"As they go through this difficult time, we ask that you respect the couple's privacy."
Fedotowsky and Martinez got engaged during The Bachelorette's sixth-season finale broadcast which aired in August 2010 and moved to San Diego together shortly thereafter.
The couple had set a date for their wedding earlier this year but postponed it indefinitely when Fedotowsky broke her femur in early June in a kickboxing session and underwent surgery later that month.
"The decision to postpone [the wedding] was very difficult. I definitely shed some tears. But I want to walk down the aisle. I don't want to limp down the aisle," Fedotowsky told People in August.
However, last month, Us Weekly had reported the pair were "miserable" in their relationship due to frequent big fights and the challenge of juggling their busy work schedules.
"Their relationship has been tumultuous since day one," a mutual friend told Us. "They're either extremely happy or they can't stand each other."
"They bring out the worst in each other," another source told Us.