John Gilbert is extremely shady. He was always known to Elena and Jeremy as "Uncle John"; however it becomes known that he is actually Elena's biological father. He hates vampires and does anything he can to protect Elena from them.

At the end of season 2, John sacrifices himself to save Elena. He also writes her a letter apologizing to her for everything he did in the past, and leaves his protection ring for Elena to give to her future child.

Vampire Diaries Quotes

You want a love that consumes you. You want passion and adventure, and even a little danger... I want you to get everything you're looking for. But for right now, I want you to forget that this happened. Can't have people knowing I'm in town yet. Goodnight, Elena.

Damon

Dear Elena, yes you heard that correctly. Hell has frozen over. I'm writing it all down. Granted, I'm half a bottle in thanks to my 1950 Chateau Cheval Blanc, a bottle I waited 65 years to open. I used to spend nights sitting in my wine cellar convincing myself I could hear it age, tannins growing, fermenting, but appreciating its beauty didn't make time go by any faster. The bottle just laid there on its shelf, torturing me while I waited for Katherine and time stood still. Eventually I convinced myself that no sip of that wine could ever taste as good as I dreamt it would. And that is the story of why I drink bourbon. I don't know who I am without you, but I know that as long as I'm with you, time will stand still. So who is Damon Salvatore without Elena Gilbert? A selfish friend, a jealous brother, a horrible son? Or maybe with a little luck, I'll do right by you. Because you may be a thousand miles away or a hundred years away, but you're still here with me and my heart is right there in that coffin with you. Until you come back to me.

Damon