The mysticism is mainly allegorical - the woman with power bewitched by the man without; the yearning for normalcy and steadfastness from a spiritual being. It can be 'spiritus' and 'animus', harmony and an understanding... There is a specific classical reference I want, but I'm just not remembering it, I'm sorry! My brain is terrible today.

Mostly I like my Willow/Xander because their grounding is so real and comes from a place more important than mystics and their world. It's a metaphoric thing, I suppose, and why it isn't why I love them, but merely another facet I like to entertain with them. Mostly my understanding of them comes from the significance of their friendship.

I think my ship_manifesto essay about covers how I see them, and to stop me confusing myself when I can't think, I'll just reference it and bow out now :)