“And here I thought catching up on nearly two centuries would be a drag,” Elena tells the Salvatore brothers when she catches them day-drinking at a bar. “Remind me of your name, again?” Stefan asks (quite slyly, we might add). We saw that look you gave Elena. Stef.
Clearly, there are some things Damon doesn’t want Stefan to know about — like the fact Stefan was hopelessly in love with his girlfriend. History sure is fun when you can control it, right Damon?