"So, what do you want me to do for you now? Go back to him?
I won't matter even if I did. There is nothing between us anymore.
You get stuck between me and Darla, it'll be the last thing you ever do."
No matter how good a boy you are - God doesn't want you!"
But I still do!
My sweet death.

"Darla was my way of reacting to the Buffy of it. I was sort of creating a
alternative theory about his relationship with Buffy and that becomes most
clear in the episode Guise Will Be Guise episode. Where The T'ish Magev is
trying to help him get over Darla, and he says "Here's what you need to do,
go out, find a small blonde thing, better, break her heart and than leave her
and that will help you get over Darla." And so what I was kind of saying is
oh, that whole undying eternal love that he had with Buffy. Buffy was actually
the rebound chick, and that she was entirely the reaction to the real love of
his life which was Darla. Because she created him for God sake."
"She is literally his mother and his lover."
~ Tim Minear