[2] His career was derailed when he was arrested on drug charges in 2014, which led him to be banned in Mainland China.

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.

[citation needed] Ko had appeared in a 2012 anti-drug advertisement in Taiwan in which he and other celebrities declared, "I don't use drugs".

[5][6] He was released on 28 August and faced another round of interrogations by the Taipei District Prosecutors Office after returning to Taiwan.