Nathaniel stopped for a moment and looked at Karen for a moment with a surprised expression. "Um... Wha..." he paused for a second and began to laugh slowly as first beginning almost inaudibly. The laughter grew though. It continued until he was quite literally laughing out loud. After a moment or two he began to calm down. "You're... You're joking right?" He said still letting out small laughed as he tried to catch his breath. "Me and Xavier? Come on. We're just... You know... We're friends. Best friends." He said as he wiped a tear from his eye due to laughing so hard. "What brought that up anyway?" He asked as he he took a sip from his drink which had been brought just a moment before Karen asked the question.