This may not be exactly what you want, but I think it's close and will give you some nice Loki feels. Oddly enough it ends up Loki/Steve, but it's all from Tony's POV which is great.
Appearances by McKinney_Wylis
The Avengers find themselves staring at Comic-Con footage featuring Loki, who is supposedly locked up in Asgard. When weird goes weirder, the team takes a trip to Asgard in search of answers. What they find are more questions, and proof that things aren't always what they seem. Steve/Loki budding bromance with possibly more, shapeshifting, general kick-assery. Told exclusively from Tony Stark's POV.
no subject
Appearances by McKinney_Wylis
The Avengers find themselves staring at Comic-Con footage featuring Loki, who is supposedly locked up in Asgard. When weird goes weirder, the team takes a trip to Asgard in search of answers. What they find are more questions, and proof that things aren't always what they seem. Steve/Loki budding bromance with possibly more, shapeshifting, general kick-assery. Told exclusively from Tony Stark's POV.
http://archiveofourown.org/works/1012032/chapters/2009041