What do you mean, Tara is treating Dawn like a lesbian lover?
Tara is kind of like an adopted mother for Dawn. She's like an estranged parent now that she broke up with Willow and has left the house. Sounds like you completely misread that scene with the milkshakes >_>
I think it's really interesting how Spike could kill Buffy now, but that's not what he ended up doing. The scene where he tries to kill that one girl was so awkward too. Like he wasn't a killer let off his chain that immediately reveled in killing. It seemed like he was trying to convince himself he's still that killer and work himself up to it. He did end up going for the kill but it just didn't seem like him.
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The batman villians all seem to be one big joke that batman refuses to laugh at - SantaRPG