Oooooh, COME ON! That Thor and Jane will end up together is practically canon! It is not unlikely they will include some love triangle in the next movie, though. In Thor it was practically implied that Sif has a crush on him. But of course Sif doesn’t have a chance, and when she realizes it she will be sad and desperate and eventually this is the part where Loki walks in; because the brothers, the Warriors Three and Sif have been friends for most of their lives, he has probably already noticed that Sif has a crush on Thor. However, maybe Loki tries to manipulate her while she is disappointed that Thor chose a mortal over her.
At the end of the movie Thor naturally kicks Loki’s ass, and Loki realizes that he actually started to care about Sif and feel sorry that he tried to use her. Maybe he can safe her from a random alien just for the sake of unrequited-love-drama?! Please???
I want Loki to finally care for someone (besides Thor).
This is the kind of redemption story line I hope for. And then he comes back in Avengers 2 and teams up with them against Thanos. I think a redeemed!Loki, but still being badass would be even sexier than the current Loki.