Ex is a 2010 Cantonese-language Romance film. Chow Yi (Gillian Chung) is about to leave on holiday with her boyfriend, Yang Pai Shu (Lawrence Chou) until an argument makes Chow Yi to dump him at the airport. Their breakup is being witnessed by her ex-boyfriend. Ex features Gillian Chung, William Wai-ting Chan, Michelle Wai, Kwok Cheung Tsang, Lawrence Chou, Jacky Heung and Anjo Leung. It was released on 3rd June 2010.