Joseph would be pleased to know Rhys knew exactly which spot he was referring to. It was easier to find the vein there in men rather than women. Especially one as slim as Rhys was. He definitely wanted to see Rhys' reaction to the intimate feeding spot. And everything else he did in between.
He was doing just fine. He didn't need to learn or experience everything in one night. If Joseph had his way, this would only be the first of them. But that being said, he certainly wanted to introduce the innocent young Kindred to a large variety of pleasures. For himself as well as Rhys' benefit.
He rewarded the nails in his back by putting some fang in the kiss. Drawing it out tortuously long, until Joseph was shivering with want himself. Then he trailed those kisses across Rhys' jaw before latching onto his neck. He bit down harder than before. Not enough to truly cause pain, but the sensation would be much sharper than the first time. Rhys had said he wanted to try rougher. So rougher he was getting. Everywhere.