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 Ko had appeared in a 2012 anti-drug advertisement in Taiwan in which he and other celebrities declared, "I don't use drugs". On 18 August 2014, Ko was arrested along with
Jaycee 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 placed in administrative detention for 14 days. On 29 June 2018, NARS invited Ko to a promotional event in Taipei. After backlash on Weibo, NARS China issued a statement on 1 July expressing regret over the Taiwan team’s decision and apologizing; Ko deleted his social media posts of the event the same day. ==Filmography==