User blog comment:Jam7/Bizarre Love Triangle: A mid-season follow-up.../@comment-3008673-20100822004626/@comment-1756703-20100822020940

Yeah, I'm dying to know the reason why Duncan is behaving so differently towards her this season. My guess is that it's an overreaction to the frustration she's caused him, but still, it just doesn't make much sense. After caring about her for the past two seasons, why is he suddenly so cold towards her now?

I think the writers are setting him up to be an antagonist of sorts, which would ironically give him a similarity to how Courtney behaved in the second season. And we all know how that ended up for both of them back then.