There was truly little Joseph could tell Rhys to make him understand his own feelings and motivations would be little use to the court against him. They didn't give a shit about his dead lovers and sire. Dead people were not leverage against him. Especially long dead ones of no political consequence.
He was far more concerned the truths would upset Rhys. He was a creature of the modern era and still thought very much of the present. It might be difficult for him to believe Joseph's sincerity.
Catching both of Rhys' hands, Joseph brought them to his lips and pressed a kiss to the knuckles. "Yes, let's sit," he agreed as he reluctantly let go. "Have you eaten anything since earlier?" While he could do with some very drunk blood, he'd settle for something warmed over. Rhys needed his answers more than Joseph needed a drink.