Caroline and Louise

The relationship between Louise Gilbert and Caroline Forbes. They met in their childhood and have always been close, even despite Caroline's former jealousy of her sister, Elena. They are also best friends with Bonnie Bennett and Elena Gilbert.

Trivia

 * Both Caroline and Louise are/were vampires.
 * Caroline was smothered to death with a pillow by Katherine in The Return. She completed her transformation by drinking from a blood bag in Brave New World.
 * Louise was killed by Alaric in Before Sunset. She completed her transformation by drinking from a woman in Before Sunset.
 * They are best friends with Bonnie and Elena.
 * They have both dated and had sex with Matt Donovan and Damon Salvatore.
 * Their mothers Liz and Miranda were very close friends.