Katherine, not wanting to lose his love, takes his fear away through compulsion. On the night that Katherine was taken away during the round up of the 27 vampires, the last person she was with had been Stefan.Giuseppe spiked his drink with vervain, which poisoned Katherine when she fed on him.They are known as "Steferine" and "Sterine" by fans.In Katherine's flashback to 1864, she admitted that she saw Stefan for the first time before they officially met in Salvatore Mansion.
While carrying her out of the carriage the vampires were trapped in, they are both shot, having Katherine's blood in their system.Later, Stefan escorted her to the Founder's Ball, when afterwards he told her that he loved her.She was astonished by this, and appears to be left speechless by his kiss.She is prepared to leave, but sees Stefan and Damon's lifeless bodies on the ground. And I wanted to leave town, but, Elena, I couldn't." Katherine makes her first non-flashback appearance in Founder's Day.Ignoring Damon, she runs to Stefan, caressing his face, proceeding to say "I love you, Stefan. I promise." She then kisses him for the last time and leaves him, not seeing him again for another 145 years. Took me years to sort that out,to truly understand what she did to us." In The Turning Point, Stefan asked by Elena, described his room: "It's the only place that has remained constant. She approaches Elena's house, so far the viewers believing it to be Elena.