Thank God there's still the memories we shared in our four years of high school. We could always come back to that. Although the reunion is characterized by usually starting off with inquiring what's new with you, it always ends in reminiscing what used to be for us. Exactly the logic behind our "out-of-place or OP game" every after a get-together. In this game, we group ourselves according to our sections back in high school--even Elective classes included! And it never fails to excite even the most unenthusiastic person in the group (who has no choice but yield to the group's whims lest he wanted to be "OP" and eternally branded as buzz kill).
Change is already a given but, at the end of the day, the Venn diagram will not cease to intersect.