That's a day negative 10 deal breaker. I can be casual friends with a "witch", but being in a relationship means I have to pretend I believe that stuff, and no one can keep up an act that long.
It's as fake as any religion. I mean it is kinda one, I think. I have very little awareness of it, I'm pretty sure witches and wiccans are different, but it's all beyond baloney, so I don't really care about the subtleties.