The way Lupin's attention was so suddenly fixated on Regulus made him feel incredibly uncomfortable. He just didn't know what to say. It wasn't like he could say that it wasn't a big deal, because, of course, it was an incredibly big deal. He had died in a particularly horrific way. It wasn't something he was ready to share with anyone yet and he had little intention of sitting here on the couch and having some kind of heart-to-heart about the whole matter with Lupin; besides, he didn't realize understand why Lupin wasn't taking the same kind of stance that James initially had. He was the stupid little boy who had joined the wrong side of the war and got what he deserved, didn't he?
"Everyone dies at some point," Regulus ended up saying, his tone going a bit defensive even as his brain was pointedly shouting that most people didn't die at the age of eighteen, entirely alone and having lied to every single person that they had ever cared about. But then, again, that was none of Lupin's business. He was purposefully not looking over at Lupin.