David approached the apparently brooding boy, and put on his best grin. "Heya there Aiden! Looks like we were paired up for the joust. You feeling up for it?" 

Aaaand here we go. One of the two people he was unsure about in camp. David didn't count Aiden as an enemy, he rarely counted anyone as his enemy, but he could still consider him a threat. Still, nothing would change with how he interacted or treated Aiden or Isabella. They were still friends and acquaintances until proven otherwise.