I haven't seen Bosworth's Lois yet - the movie doesn't start here in Germany until a week from now, I think - but I hear ominous rumblings.

Anyway, yes, the partnership is a big part of the appeal. I watched some more s1 episodes, and there is one where he temporarily leaves, which makes her say "why is everyone looking at me as if I just lost my best friend?", and that is really what they become to each other, long before they get to be lovers. Best friends who bicker, and partners.