The sound of Sirius' moaning was music to Gaius' ears, and he watched avidly as Sirius undressed, stealing touches on whatever skin he could reach while Sirius shed the rest of his clothes. When Sirius moved over him, he purred, arching back and putting himself on blatant, tempting display. "You're sexy, too," he said, dark eyes full of heat. "And you inspire me."