Buffy the Vampire Slayer, Season 6

Dark Willow:
Let me tell you something about Willow. She's a loser. Always has been. She got picked on through junior high, high school, right up until college. With her stupid mousy ways. And now? [laughs bitterly] Willow's a junkie. The only thing Willow was ever good for...the only thing I ever had going for me were those moments...just moments...where Tara would look at me and I was wonderful. And that will never happen again.

...

Dark Willow:
[to Buffy] Please! This is your pitch? You hate it here as much as I do! I'm just more honest about it. You're trying to sell me on the world? The one where you lie to your friends when you're not trying to kill them? Where you screw a vampire just to feel and insane asylums are the comfy alternative? This world? Buffy, it's me! I know you were happier when you were in the ground. The only time you were ever at peace in your whole life was when you were dead. Until Willow brought you back. You know, with magic?