Bonnie Bennett is one of the main characters of The Vampire Diaries. She is best friends with Elena Gilbert and Caroline Forbes. She is also the main love interest of Enzo and is the former love interest of Jeremy Gilbert.
Ever since childhood, Bonnie has been best friends with Elena Gilbert and Caroline Forbes. She has developed other close friendships with fellow childhood friends, Matt Donavan and Tyler Lockwood. In her childhood, Bonnie's mother, Abbey Bennett left her and their family to seal Mikael, father to the Original Vampires, but lost most of her powers while doing so and ultimately decided to never return. Ever since, Bonnie grew up with her father Rudy Bennett and her grandmother, Sheila Bennett while remaining completely unaware of her true heritage as a witch. However, while Bonnie didn't believe in the supernatural, her grandmother Sheila tries to explain the truth to Bonnie about her lineage multiple times, but was never believed.
In the first season, when Bonnie and her friends enter their second year at Mystic Falls High, Bonnie begins to discover her true lineage as a witch, including the awakening of her powers. Bonnie learns she comes from a long line of Bennett witches from her mother's side of the family and begins to learn more details from her grandmother. Bonnie also discovers the existence of other supernatural beings, including vampires. However, Bonnie grows to resent Vampires, mainly Stefan and Damon, blaming them for the death of her Grams after she is killed from being severely weakened by lifting the spell placed on the Tomb Vampires. Due to her resentment and newfound hatred of them, it causes a rift in her and Elena's friendship as Bonnie wants nothing to do with Vampires, meaning she can't be near Elena due to her connection with Stefan.
Enzo is a Vampire who becomes Bonnie's new main love interest towards the ending of the series in the beginning of the seventh season.
Jeremy Gilbert was Bonnie's original love interest throughout the majority of The Vampire Diaries. They have known each other ever since childhood, being best friends with his older sister Elena Gilbert. In the beginning of the series there wasn't much interaction between them. In the first season, Bonnie was learning about her heritage as a witch and learning to control her awakened powers while Jeremy already held romantic feelings for Vicki Donavan and later Anna. In the second season, they begin to develop a more closer relationship and begin to see each other in a new light. They grow more closer as Jeremy becomes worried about Bonnie when she reveals her weakness regarding her powers, learning if she tries to do too much magic it causes a great effect on her. Jeremy soon begins to develop romantic feelings for Bonnie, but she originally didn't feel the same way as she began to develop an interest and affection for Luka, a new witch that has arrived in Mystic Falls.
Later when Bonnie learns the truth that Luka and his father are in League with Elijah, Bonnie cuts ties with him over his betrayal, learning he only became her friend to stay close with her. Due to this, Jeremy and Bonnie begin to grow closer again and eventually Bonnie realizes she also holds romantic feelings for Jeremy, but is worried about Elena's reaction to the news. Worried about how Elena will feel about their newfound romantic relationship, Bonnie decides to wait and ask Elena first before she and Jeremy can properly proceed with their romance. Eventually, Bonnie finally manages to reveal to Elena her and Jeremy's romantic feelings for each other and although shocked at first, Elena assures Bonnie, allowing her and Jeremy to enter into an offical romantic relationship.
- Bonnie has died several times throughout the series, but somehow manages to come back to life.
- In the sixth season, Bonnie and Elena's lives are linked together as Elena remains asleep and won't awaken until Bonnie dies.
- Bonnie calls her refers to her grandmother as "Grams".
- Throughout the series, Bonnie constantly loses her powers, but somehow later manages to regain them.