Gaius gave a soft purr of pleasure, leaning back against Regulus with an expression of such pure happiness it almost seemed like he would melt into a puddle of goo where he sat. "All yours," he agreed, lifting one hand to caress Regulus' arm where it encircled him. He looked at Harry and grinned. "A ring, a collar... Whatever seems most appropriate to represent your relationship. Some things people chose aren't even socially acceptable."