Yes. Others have more intelligent things to say. I say only "Never let them do it concurrently? I call no *fucking* way."
I'm the first to admit that Darla wears the pants in the Darla/Angelus relationship, but like she wouldn't be all over a d/a/d sandwich, even if we left Spike out of the equation? (And yes, like she would care that the Immortal straddles...uh. Good and evil. Uh. So I was saying... Uh.)