Welcome to Humor Nation. Caroline Forbes is one of the main characters on the Vampire Diaries. She is a close friend of Elena Gilbert. In the beginning we see her sharing a strained and complicated relationship with Elena. She saw Elena as her rival and always tried besting her, but lived in her shadow. Her insecurities and issues were pretty evident from the beginning, but when she transformed into a vampire, she gained a new confidence through her new skills and abilities resulted from vampirism. She again became great friends with Elena and started helping her.
Caroline was supportive of Elena’s relationship with Stefan, she’s a Stelena shipper. However, when Elena let it known that she harbors feelings for Damon, Caroline was dismissive of them. However, later in the show, she accepted her relationship with Damon. Both of them have tried harming the other when their humanity was turned off. Caroline shared a strained relationship with Damon Salvatore who manipulated and used her. Stefan was the one who saved her from Damon and served as her mentor when she became a vampire. They both became good friends and were always there for each other. Caroline offered Stefan the emotional support and promised him that she’ll always be there for him when he feels like he cannot control himself.
They both grew closer and ultimately their friendship transformed into a romantic relationship. It wasn’t an easy sailing as there were numerous bumps in the road, but they come through. They ended up marrying each other. While Caroline have had numerous romantic relationships on the show, her most popular ship is with Klaus. Klaus developed a romantic interest in Caroline and pursued her. She continued rejecting him, but deep down she had feelings for him.
The two would ultimately end up making passionate love in the woods. Caroline asks Klaus to promise to never come back. Klaus Mikaelson would eventually leave for New Orleans. The two would later reunite in Season 5 of the Originals. Klaus who has absorbed the dark magic of Hollow is being affected by it and has become chaotic. Caroline and Klaus would share a final moment in the finale episode of the Originals where Caroline tells Klaus that she never saw him as a villain in his story.