The Other Woman (2014)

After discovering her boyfriend is married, a woman (Cameron Diaz) tries to get her ruined life back on track. However, when she accidentally meets the wife he’s been cheating on (Leslie Mann), she realizes they have much in common, and her sworn enemy becomes her greatest friend. When yet another affair is discovered (Kate Upton), all three women team up to plot mutual revenge on their betraying, lying, three-timing cheater.