When I sat down and spoke with Sif's alter-ego Jaimie Alexander in January, she was feeling relatively secretive about the second Thor movie, only alluding to the importance of Sif's scenes with Jane Foster.
At the time I surmised this would give us a love triangle, and now Alexander has confirmed that I was right. And then, having said that, she's also gone on to spill more about Sif's role in The Dark World.
Check out her comments in this video from Access Hollywood.
The more I hear about the new Thor movie, the more it seems to have been structured around interpersonal relationships, both romantic and – like the last time around – familial. That's definitely the right choice. I'm not saying Thor movies should be soapy, quite, but the roots of this thing are definitely compatible with "sagas."