Credit: Jordan Strauss/

Another Bachelorette couple bites the dust.

Ali Fedotowsky and fiance Roberto Martinez have called it quits, the couple's rep confirms to Us Weekly. "Ali Fedotowsky and Roberto Martinez have ended their relationship," their rep said, adding, "As they go through this difficult time, we ask that you respect the couple’s privacy."

Martinez, a 28-year-old insurance agent, popped the question to Fedotowsky, a 27-year-old Facebook employee turned TV personality, in 2009 during the finale of the sixth season of The Bachelorette.

Engaged for 18 months before ending their relationship, Fedotowsky blamed the wedding postponements on scheduling conflicts and a kickboxing injury, but pals told Us last month the issues ran way deeper than that. 

"Their relationship has been tumultuous since day one," an insider said. "They're either extremely happy or they can't stand each other."

Stressed by long, hectic work hours and more, the duo (living in San Diego) were prone to big-time fights. "They bring out the worst in each other," another source said.

"She's miserable in the relationship and he is too," a friend of the couple told Us.

Tell Us: Are you surprised Ali and Roberto never made it down the aisle?