Former "Growing Pains' star, ex-Atheist and current born-again Christian Kirk Cameron appeared on 'Piers Morgan Tonight' last week where he called homosexuality “unnatural” (video below).

Cameron said, “I think that it's unnatural. I think that it's detrimental and ultimately destructive to so many of the foundations of civilization. So do I support the idea of gay marriage? No, I don't."

The former sitcom star said that if his children came to him and admitted that they were gay his response would be: “I wouldn't say 'That's great, son, as long as you're happy.' There are all sorts of issues we need to wrestle through in our life... Just because you feel one way doesn't mean we should act on everything we feel."

The gay and lesbian activist group GLAAD hit back with a statement: “Cameron is out of step with a growing majority of Americans, particularly people of faith who believe that their gay and lesbian brothers and sisters should be loved and accepted based on their character and not condemned because of their sexual orientation."

UPDATE: Kirk Cameron defends his anti-gay remarks in an email to ABC News.