Summary: You are the sister of Charles Xavier. You are part of the Avengers and dating Bucky Barnes. Unbeknownst to you Bucky is having an affair with Natasha. When you catch them in the act, things go downhill from there. You are a Mutant with similar powers to Jean, only with Immortality thrown in.
Pairings: Bucky x Reader, Bucky X Natasha, Logan Howlett X Reader
Warnings: Angst, Violence, Cheating, Feelings of worthlessness, Depression.