
Dana and John met when they were freshmen at OBU. They became best friends and have remained BFFs since then.
Dana met Levi at a party where he exclaimed that they would be best friends from then on. He was right.
Bri and Dana met at OBU and were roommates for most of their time there.
Jacob and Sheldon met when they were paired up in the international beard and mustache competition. Ultimately Sheldon was devastated by the power of Jacob's mustache but he never forgot his worthy adversary. Sheldon's wedding will be the first time they have seen one another since.
Shannon was hired to be the best man after an extensive nationwide search for the person that looks the most like Sheldon.
Xochit is a walrus.
Anna is one of Sheldon's adorable nieces.
Rosalyn is Sheldon's other adorable niece.