Heir and the Spare (слэш)

Loki never fell from the Bifrost.
Thor believed that saving Jotunheim would save them all. There would be no grief for a lost brother, son, or prince. Loki would face trial for his crimes before the Allfather, before he would be returned to them. It would be a fresh start for their family, as Loki was given a chance to redeem himself and heal from his wounds, but things would soon go awry.
Jotunheim held a new king. Jane waited back on Earth.
Thor never expected for their relationship to be ripped further apart, forced into a political marriage and torn between conflicting duties, and yet there was no way to move except forward. He would save Loki the only way he knew how, even if that meant that both suffered an unwanted marriage in the meantime. Loki would be saved.