Kai Ko

Kai Ko Chen-tung (born Ko Chia-kai on 18 June 1991) is a Taiwanese actor, singer and film director. Ko won Best New Actor at the 48th Golden Horse Awards and the 12th Chinese Film Media Awards for his starring role in the film You Are the Apple of My Eye, also his film debut. In November 2011, Ko released his debut studio album, Be Yourself. His career was derailed when he was arrested on drug charges in 2014, which led him to be banned in Mainland China.

Relationships
Ko dated Cherry (黃慶宜), a TV showgirl, before he became famous for You Are the Apple of My Eye. He made headlines when his romance with pop singer Elva Hsiao, who is 12 years senior to him and a bigger star, broke in 2012. They split in 2014. Ko then has an on-and-off relationship with singer Tia Lee since 2014.

Drug use
On 18 August 2014, Ko was arrested along with Jaycee Chan, son of Hong Kong film star Jackie Chan, by the Beijing Police for drug use, amid a broad anti-drug crackdown on the Chinese celebrities. Police said both actors tested positive for marijuana and admitted using the drug. Ko was given a sentence of 14 days in administrative detention.

Ko had appeared in a 2012 anti-drug advertisement in Taiwan where he and other celebrities declared "I don't use drugs". He was released on 28 August and faced another round of interrogations by the Taipei District Prosecutors Office after returning to Taiwan.