Kristin Cavallari opened up about how she decided to end her marriage to Jay Cutler, seven years after tying the knot.“It was not an easy decision, obviously,” Cavallari, 33, told Entertainment Tonight in an interview airing on Monday, September 28. “It was something that I truly thought about every single day for over two years.”The former couple were together for three years before saying “I do” in 2013.