The Vampire Diaries
Possible spoiler warning.
The Vampire Diaries is an American television series developed by Kevin Williamson and Julie Plec, based on the book series of the same name written by L. J. Smith. The series premiered on The CW Television Network on September 10, 2009, and has currently finished its second season on May 12, 2011. The series follows the events in the town of Mystic Falls, Virginia, a fictional small town haunted by supernatural beings. The main focus of the series is the love triangle between the female protagonist Elena Gilbert (Nina Dobrev) and Stefan and Damon with dark pasts. Later the light is thrown on the mysterious past of the town involving Elena's malevolent doppelgänger Katherine who seeks revenge against the town, Stefan, Damon, and Elena.
Source: Wikipedia
Anna & Jeremy Gilbert
Possible spoiler warning.
Jeremy starts a relationship with a vampire named Anna, but Anna is killed by John Gilbert, Jeremy's uncle, at the end of season one. Jeremy, not wanting to deal with this pain, tries to become a vampire by overdosing while having Anna's blood in his system, but he fails.
Anna starts a romantic relationship with Jeremy Gilbert despite her mother's protests, calling him her "weakness." The two suffered a brief falling-out after the discovery of Vicki Dovonan's body, but later made up and were even seen getting undressed together and making out. When Pearl was killed by Jeremy's uncle John Gilbert in the episode "Blood Brothers", Anna was devastated but did not seek revenge. She attempted to save Jeremy from an impending vampire attack in the Season One finale, but was rounded up with the other vampires after suffering the effects of The Device and was dragged to an old basement. There John Gilbert found and staked her. However, before she died she gave a vial of her own blood to Jeremy to enable him to become a vampire, which he drinks on learning of her death, and overdoses on sleeping pills in order to die with vampire blood in his system (in order to turn) believing his emotional pain will cease by turning. However, the blood only heals the damage done by the pills, and he does not turn.
Source: Wikipedia
More can be found at the vampire diaries wiki.