The 'Fine China' singer is currently undergoing a court ordered 90-day stint at a live-in rehabilitation centre to focus on his anger issues but Karrueche Tran pulled out all the stops to ensure he had a good Thanksgiving.
A source told Hollywoodlife.com: "She made him everything. She brought the boy a home-cooked turkey, yams, cranberry stuffing, black-eyed peas - the works."
The meal was a big hit with the controversial star, moving him to tell her how much she means to him.
The source added: "He was thankful and real receptive to her. He told her, 'Babe, I'm thankful for everything that is you. Thanks for looking after me and I love you.' "
Chris' kind words had a huge effect on Karrueche, who reportedly broke down in tears when he said how much she meant to him.
The insider said: "She was completely moved by what he said. She said she couldn't stop crying and that her hands were shaking."
Chris is also being supported through his rehab stint by his mother, Joyce Hawkins, who reportedly stopped talking to him after he threw a rock at her car window, but recently broke her Twitter silence.
She posted: "MY ANGEL WITH BROKEN WINGS GOD LOVE YOU SO MUCH AND I DO AS WELL."
Chris is expected to remain in rehab until the new year.