Jack let out a noise that was sexual and pleased and amused and pleading all at the same time, and adjusted his rhythm. Trying to find anything he could do to make the other man squirm for him. He wanted to make Scotty call his name out some more. Wanted the other man boneless with pleasure, wanted to assure him that just because there was Ianto, because there was this immortality thing, that didn't mean that things had to change between them.