I applaud the way the director handled this coming-of-age movie. He managed to touch a really heavy topic like homosexuality without throwing it into our face. He had managed to keep everything simple, with no dramatic ups and downs, but accurately reflect the lives of 17 year olds. The lead characters may seem too sweet and innocent, but pretty accurate to people in Asia.
To keep the movie real, the director went to the streets and got the male lead Chen Bo-lin (Zhang Shi Hao) and the female lead Gui Lun Mei (Meng Ke Rou) and all of the other cast. And knowing that they were all first time actors really lifts up the mood of the movie. I say they did a great job. By the way, the name 'Meng Ke Rou' means 'fierce subdue the gentle' (although not the exact words, the pronunciation is similar), which to me is a subtle undertext to her character. The biggest applause goes to Gui who did a great job portraying in Meng's confusion and awkwardness, and her struggle to conform to society's standards.
Watch the movie for its simplicity, if you are looking for a plot heavy, technically driven movie, this is the wrong place. One of my fave movies of all times.