Blue Gate Crossing (2002)

Best friends Meng Kerou and Lin Yuezhen are enjoying their high school days until Yuezhen persuades her comrade to do her a favour by chatting up Yuezhen's new crush, Zhang Shihao (Wilson Chen Bo-lin). All is well until he falls for Kerou instead. Adding to her dilemma are her secret feelings for her best friend and, consequently, Kerou's questions about her sexuality.