Errr, I'm kinda looking for a fic:)
It's a fic in Sunnydale. It has Angel and Spike in it. Somehow Xander is turned and Spike is his Sire. I don't remember much else except that at the end they're going to Angel's mansion. When they get there they get out of the car and Spike is being harsh with Xander. Angel says something about Spike being too harsh with the boy and Spike tells him to mind his own business Xander was his and he'd treat him the way he saw fit.. I think it was a work in progress at the time. It's been a while since I read it, and I wanted to see if the author had finished it.
Fic found! It's by Druffine:)