I think it's fine the way it is. As much as I love Draco (and as much as my inner fangirl is shouting yes), it would have taken away from the plot if Draco randomly had a love interest. And I'm sure many Draco haters would have been annoyed at the sudden shift in perspective and storyline. Draco's girlfriend doesn't exactly have anything to do with stopping Voldemort, does it? Besides, we've got Astoria, and as I've said many times before, us not knowing who Astoria (his wife) is is a sign that Draco moved on with his life, which is what all Draco fans really want, isn't it?
