I'm as good as certain one year later will find Draco on Harry's side, out for vengeance against Voldemort and Greyback and trying to stick it to Harry on the side to satisfy his overlord complex. In which Harry *might* be humouring him because he feels some attraction. Maybe - he's been pretty badly hurt, and I'm not sure if he could forgive on a personal level, Horcrux or not. But whether they're at each other's throats (in between fighting a war together) or in each other's pants, there'll be a lot of aggression to work through...