This is an interview with the Taiwanese director Mag Hsu, in which she discusses her film film 'Dear Ex' (2018). The film is set in the aftermath of a gay man’s death, relating the conflict that develops between his wife, male partner, and young son. In the interview, Hsu discusses a range of subjects including the practicalities of making of the film, its themes of family and sexuality, and the reception of the film. The author's contextual introduction discusses how 'Dear Ex' resonated with audiences in the context of debates over the legalization of same-sex marriage in Taiwan, mounting a challenge to traditional notions of the heterosexual family.