"He's probably the closest person I've ever lost," the 28-year-old newly married actor says in the latest issue of Bello, available now. "It was a heavy and weird month. Cory was the nicest man I knew. [Addiction] is a f--king horrible disease."
Zegers costarred with Monteith in one of Monteith's last films, All the Wrong Reasons.
"By the grace of God, I'm not dead," he said, referencing his own past struggles. "I think it's something that constantly reveals itself as something that happens to people who, for whatever reason, don't get well, and it was by no lack of him trying or anyone else trying to help him get well. Eventually, your body just says, ‘No, it's enough.' But it doesn't make it any less sad or tragic. I think the problem people had was that he looked healthy and he never showed the struggles he was having."
Zegers also opened up about his new film, Mortal Instruments: City of Bones, in which he plays gay character Alec Lightwood.
"The thing that I didn't want was for him to be some generic, prototypical character, what people would expect from the gay character," Zegers said. "For me, it was about creating a character whose sexuality didn't matter...I actually don't think it's that big of a f--king issue anymore. Certainly not with me, and especially not with the generation that read this book. So it wasn't something that we really focused on. But one thing I was aware of was the fact that there haven't been many great examples of a really strong gay character, one of the leads in a really big movie who happens to be gay and who's also kind of a badass."
If you or someone you know needs help with addiction issues, contact Narcotics Anonymous (http://www.na.org).