Mischief Loves Company (A Loki/Avengers fanfic)

Loki has everything he wants, he is finally king of Asgard, Thor has moved to Earth and is no longer in his way. But what happens when a woman shows up on Earth, a woman from his past. Loki has always thought Sigyn got bored and left him behind, but did she really? Or did something or someone get in the way of their romance... can they rekindle it? And can Loki help Sigyn before the biggest mistake of her life becomes a reality? (Told partly in flashbacks)