The third point of view :
Theodore's jaw dropped open at that sudden revelation.
"Why are you so shocked, don't tell me you never looked up our surnames," Ailee found his expression silly.
He never did, no, he didn't have the time to check it up. Also, why would he do so when he was more interested in Ailee. The truth is that Theodore indeed found Neon strange since he looked so different from the twins, but he guessed he was a relative or a younger sibling who was smart enough to skip classes and catch up to them. Kids were so smart these days.
"So he's adopted?" Theodore unconsciously wished so because he suddenly felt threatened.