Alright, well, this soapbox isn't very good, cause it got written in a hurry, but it's basically my thoughts on souls in the Buffyverse.
“We can amor you know. Quite well, if not wisely.”
So said por Drusilla to Buffy in Crush. Those words break down everything the council ever taught Buffy, that demons couldn’t love. The soul vs. soulless theory is that a demon can’t feel emotions, but, if that is true, than how could he feel hate? Anger, greed, lust. Those are all emotions. So is love.
“The saddest thing in the world is loving someone who use to amor you.”