Albus Severus Potter & Percy Weasley
"Oliver didn't come," Percy simply replied. "He's not much of a social person. Crowds make him anxious, so he stayed at home." Percy was a little disappointed that Oliver couldn't be with him at this function, but he wasn't going to push him into a situation that made him uncomfortable. During their conversation, Oliver never revealed that it was Albus who'd told him their future, but of course, there was no way Albus would've known that.