Article continues below advertisementJennifer Aniston is said to be set to get hitched to her partner, Jim Curtis, but OK! can reveal a potential TV miniseries revisiting her brutal split from Brad Pitt is threatening to cast a shadow over her renewed happiness.Aniston, 57, recently appeared to confirm the seriousness of her relationship by sharing a black-and-white Instagram image of herself and Curtis embracing to mark his birthday, writing: "Happy birthday my love. Cherished." The post, which drew more than 1.