Jennifer Lopez and Ben Affleck reunite, attend back-to-school night to

Jennifer Lopez and Ben Affleck put on a united front at their children's back-to-school night.. According to TMZ, the exes supported their respective children at a Los Angeles area school.. Insiders told the outlet that the two were 'cordial' and 'totally cool with each other.'. They were seen together on Saturday and spotted again at the school event on Tuesday.