The love triangle in Twilight involves the three main characters: Bella Swan, Edward Cullen, and Jacob Black.
Bella Swan: The human protagonist of the series. She is initially drawn to Edward Cullen but later becomes close friends with Jacob Black.
Edward Cullen: A vampire who falls deeply in love with Bella. He is initially hesitant about pursuing a romantic relationship with her due to the dangers his vampiric nature poses to her.
Jacob Black: A member of the Quileute tribe and Bella's childhood friend. As the series progresses, Jacob develops strong feelings for Bella and becomes a key figure in her life, forming a close bond.
The love triangle intensifies as Bella and Edward's relationship faces various challenges and conflicts, particularly due to Edward's vampire nature and the danger it poses to Bella. Meanwhile, Jacob's feelings for Bella become more apparent, leading to emotional tension between the three characters.