Rings Around by Unloyal_Olio

Rings Around - Unloyal_Olio

A beautifully written fanfic in the 'Game of Thrones' style. Omega Stiles becomes consort to King Peter to cement an alliance but Peter still mourns his soulmate Marie, lost in the fire. Prince Derek, broken from his dealings with Kate Argent finds Stiles appealing.

Source: http://archiveofourown.org/works/2146698?view_full_work=true