Willow's Dream
Willows' dream is wierd. As in Buffy's dream, we get the sence that we don't know something about Tara. Willow also seems to be nervous of being 'out' and ashamed of what Oz thinks, or perhaps I'm reading too deaply. She seems to have the fear that people are talking about her, and maybe she is not comfotable with how she used to be, thinking people will only remember that.

UPDATE!!

In light of some events of season 6, Willow's dream is now a little clearer. The whole dream is about putting on an act, being somebody else. We now know that she's been hiding her mgic addiction for the past couple of years, and has been putting on a flase persona almost to hide it.
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