-Both are called "Ahjumma" and "Ahjusshi" from their fans.

-Suho's favorite number is 8 and Taeyeon's number is 9 *number sequence*

-Suho's favorite color is gold and purple while Taeyeon's favorite color is purple

-Both are the leader in their group

-Both leaders pull their groups to have a group meeting every so often to clear up misunderstandings among their group members

-Both are known to have milky white skin

-Both of their favorite place to go is Han River

-Both of them are the second child in their family

Suho's life motto is..."know yourself"

Taeyeon's life motto is..."Never do things you'll regret later"

Put that together you get... "Know yourself [so that you'll] Never do things you'll regret later"