Former Fahrenheit (Taiwanese boy band) member, Wu Chun was originally cast to play the robot lover, Night. However, on Mary 3, 2011, Jiro Wang (Wu Chun's band mate) replaced him.
This series is based on the original Japanese manga novel "Absolute Boyfriend" by Yuu Watase.
Korean actress, Hye Sun Koo's voice was dubbed as she cannot speak Chinese.
This is the first GTV idol drama to air in Singapore first before its premiere in Taiwan, although the Singapore broadcast didn't include bloopers/behind the scenes.
Based on manga series "Zettai Kareshi" by Yuu Watase (published from 2003 to 2004 in shojo manga magazine Shojo Comic).