Us Weekly is reporting the particulars of Jennifer Lopez and Ben Affleck’s breakup. The tumultuous 18-month romance purportedly ended Tuesday (January 20), just three days after Ben returned to Los Angeles from the Sundance Film Festival. The decision was reportedly mutual. One reason for the final demise of the relationship is said to be Jennifer’s desire to settle down and have a baby. Another, according to Us, was her chagrin at Ben’s partying ways. The latest incident cited was Ben and pal Matt Damon’s night out in Berlin, where the two were photographed being admired by a bevy of women.