Leslie Mann (left), Cameron Diaz and Kate Upton in The Other Woman
Barry Wetcher/Twentieth Century FOX Film Corporation
03/27/2014 AT 05:15 PM EDT
In The Other Woman, Cameron Diaz and Leslie Mann play romantic rivals turned best friends who team up to get revenge on a no-good man. They seem to get along well in real life, too.
During their Twitter chat from Las Vegas to promote the film, Diaz and Mann clued PEOPLE readers in on their favorite part of shooting, gave advice on how to deal with cheaters, and even described their perfect girls' night. The Other Woman premieres April 25, but until then, enjoy this recap: