From the outside, Sofia Vergara and boyfriend Nick Loeb – who have reportedly split – seemed to be in it for the long haul.
The vivacious Modern Family star remained a constant by Loeb's hospital bedside as he recovered from a serious car accident in Aug. 2010. A year after the injury, Vergara also stood by her man when he considered running for the Florida U.S. Senate.
But behind the public appearances and PDA was an argumentative pair of opposites, who sources say had incredible chemistry, but were plagued by problems from day one.
One source close to Vergara's inner circle, who tells PEOPLE the couple ha...