Sebastian frowned a little at the sudden change in Casper's mood. Not that he'd really said or done anything to show it, but the weakness of his grin after how playful he'd been before was a dead giveaway. "You'd probably be surprised just how much time we have," he replied softly. Well...he had time at least. But then again he wasn't human and would live far longer than the young man in his arms could ever hope to. Unless, of course, Casper was hiding what he really was as well. For his part though, Sebastian was getting tired of having to keep it all a secret. There were days when he just wanted to get everything out in the open and deal with whatever consequences that might bring. But he'd only survived this long by keeping secrets and that was far too ingrained in him by this point to just give it all up.