He said it was about creating a bond for the raising of children. Not sure who slipping one to the non-wife in Canberra is strengthening that bond. Nor did he ever talk about how gay people couldn't raise children, but that's a whole different idiotic point he made.
You can read that into it IF you chose, but
He specifically talked about the sanctity of marriage in the Parliament while simultaneously sh!tting all over the sanctity of his own marriage. How do you believe a word he says after that?
Maybe just post what he said to support your claim.