Secrets and Trust (слэш)

During the Invasion, Tony takes a nuke into space, the portal closes - only this time he doesn't come crashing back to earth. The Avengers are left to mourn, and to try and continue on without him. Try to finish the job that Tony's sacrifice had allowed them to do. And so, together, they head to the tower to finally finish this.
They never expected to find Tony, alive and healthy, sitting at the bar. Or to see Loki sitting at his side.
What's going on here? How did Tony survive? And what secrets is he keeping from them?