KJ Apa shares memories of late 'Riverdale' co-star Luke Perry l GMA

Apa also discusses his new film, "I Still Believe," which features the true story of Christian music star Jeremy Camp. LEARN MORE: https://gma.abc/2Iv0smA Subscribe to GMA's YouTube page: https://bit.ly/2Zq0dU5 Visit Good Morning America's homepage: https://www.goodmorningamerica.com/ Follow GMA: Facebook:   / goodmorningamerica   Twitter:   / gma   Instagram:   / goodmorningamerica   Watch full episodes of GMA: http://abc.go.com/shows/good-morning-... https://hulu.tv/2YnifTH #GMA #KJApa #Riverdale #IStillBelieve #JeremyCamp #ShortlandStreet