Gwei Lun-mei  Gwei Lun-mei (; born 25 December 1983) is a Taiwanese actress. She started her acting career in 2002, with the film "Blue Gate Crossing". Gwei then appeared in a few more films before achieving wide recognition for the film "Secret", directed by Jay Chou, in which Gwei played the character of Lu Hsiao-yu. In 2012, Gwei starred in "Girlfriend, Boyfriend", a coming-of-age drama in which three teenagers navigate their attraction to one another – from their high school years into their adulthood. Set partly against the Taiwan's martial law period (1949–87) and partly against the newfound freedom that the once-oppressed protagonists are struggling to cope with, the film charts the tortured emotional lives of its three characters, played by Gwei, Joseph Chang and Rhydian Vaughan, over the decades. Gwei has been in a long-term relationship with actor and filmmaker Leon Dai since 2004.