One day after reports surfaced that Kristin Cavallari and her fiance, NFL star Jay Cutler, had called off their engagement, the reality star's rep confirms the break-up to Life & Style .
"Kristin Cavallari and Jay Cutler have ended their relationship," her rep tells
Life & Style
. "This is a difficult time for them, and they ask you to respect their privacy during this time."
After a whirlwind romance -- the star of The Hills and the Chicago Bears quarterback dated for 10 months -- Jay, 28, abruptly ended their relationship after an argument on July 22, when Kristin, 24, chose a work commitment over plans with Jay, a source close to Kristin tells Life & Style . "It enraged Jay," says the source. Still, his decision to end the relationship came as a shock to Kristin. "She was devastated. She was so happy and excited about their future."
Kristin has been excitedly planning her dream wedding, which was set for summer 2012. After accepting Jay's romantic proposal in April, Kristin gushed to Life & Style about plans to move from her home in Los Angeles to his in Chicago. "It feels so right with Jay," she told Life & Style at the time. "He is the most down-to- earth, loyal human being I've ever met."