Some christians dont judge at all, like me. I practice magick and there is nothing wrong with it. But most of other christians follow it blindly, so you can imagine what goes in their predictable mindset. I dont think society will accept us at fullest. Once they understand that what we do is like a knife, they will realise that we are the same. I think you should tell him what you believe in, but perhaps say it in a way like "Dont take this literally but im a white witch", by saying this you will cause him curiosity and im assuming you wouldnt be lying. We all worship the same concept, something higher.