Her turn in Criminal Minds as a romantic interest for Reid would otherwise be welcome news—but fans were left taken aback by J.J.'s sudden and passionate declaration of love for Reid in … Criminal Minds casts Reid's love interest for final season After this month's season finale, Criminal Minds has revealed a new love interest for Reid (Matthew Gray Gubler) in season 15. But I can't imagine many people predicted that it would all get deflated so quickly before his new love interest's arrival.