ahh, tiit, as some of us affectionately call it...i go back and forth about what happened in tara's room that night. it might have been too early for sex (i can't decide about this one), but i definately think that something more than platonic happened. i wouldn't be surprised if they had their first kiss then. (and god damn the WB for not letting us see it - isn't one of the biggest TV tropes the build-up to a couple's first kiss, that's so exciting to watch when the viewers finally get to see it?)
because after all, something happened to convince willow to take that crystal with her after all, and i don't think that platonic spells were that something. i like to think that they managed to pull off a cool and difficult spell, sitting across from each other, and when they were done they locked eyes just like they did right after moving the soda machine in hush, and slowly starting moving toward each other, hardly aware of what they were doing...
and the next morning, willow woke up, snuggled up around tara, and realized that she had a girlfriend. and smiled to herself.
that's what i like to think.