“Friends With Benefits” helmer Will Gluck is in negotiations to direct Warner Bros. heist pic “For Richer or Poorer.”Reid Carolyn did the most recent rewrite, which is what spurred Gluck’s interest in the project, according to sources. Story follows a thief and her ex-boyfriend who stage a fake wedding at New York’s American Museum of Natural History — with plans to rob it during the ceremony. Peter Principato and Paul Young are producing through their Principato-Young Entertainment. No cast or production start date have been set, and it’s not known whether this would be the UTA-repped Gluck’s next project. Gluck is producing Screen Gems comedy “About Last Night.” He’s also shepherding numerous pilot prospects for ABC, CBS and NBC, including the Michael J. Fox sitcom that landed a 22-episode order from the Peacock.