Damon

you are katherine. after damon, stefan, elena, bonnie's grandmother and bonnie were able to get into the crypt, damon did not find you there. soon anna told him that she saw you for the last time in britain in 1993, and you did not look for him at all. since then he began searching for you all over the world.

London. 2010. March 3.
Catherine walks down a dark street in normal clothes for this time of year. From the darkness, Damon approaches you with incredible speed, standing right in front of you
"Oh dear Catherine, half a century has passed. I was looking for you."

Damon is a vampire since 1664, he is 178 years old, but looks like he is 17. When the church with vampires and witches was burned, she was helped to escape and only in 2010 this became known.