Cory Monteith Cremated — Father ‘Devastated’

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Cory Monteith
“s body was cremated Tuesday in Vancouver following a private viewing with his family and girlfriend Lea Michele, our sources has learned — but Cory”s father wasn”t invited … and he”s heartbroken.

Cory”s dad Joe Monteith — who is divorced from Cory”s mom Ann — tells our sources … he was informed of the cremation after the fact, adding he”s “totally devastated” he didn”t get a chance to see Cory”s body.

We”re told Cory”s body was released yesterday to his mom, and she decided to hold a viewing at the hospital with Lea and Cory”s brother Shaun. Following the viewing, we”re told Cory”s mom decided to have him cremated.

Cory”s dad tells us, “I always loved both my sons and am going to miss Cory very very much. I”m saddened at the fact that I couldn”t have been there to see my son before he was cremated.”

As for Cory”s alleged heroin use … his dad says he”s “shocked.”