Interesting also to go off Local_max's thought about how Angel is a very real threat to Joyce and that's the only reason Buffy starts treating Angel like a threat. When you compare this to Spike who is so not a threat to Joyce ever (I think Spike kinda probably thought she was one helluva woman when she hit him on the head with the axe and ordered him to "stay the hell away from my daughter"), it does make you wonder. Spike does have the history of threatening to hurt the Scoobies several times and fighting with Buffy, which is significant, so he qualified as a threat to the family. But still... Joyce.

Of course, Angel gets to set the rules. Soul is what matters. Spike doesn't have one. End of discussion. But I can't help but imagine how things would've gone differently if Spike were the vampire to get there first, before Angel set all the rules for how Buffy viewed a vampire straddling good and evil.