Abstract:Twilight is a love story between a teenage girl Bella and a vampire Edward which was in the popular book series by Stephanie Meyer. Twilight, as the first saga of Mayer’s work, described a complicated story about their acquaintance, accompanied with each other and the determination of guarding their true love. It seems like a simple love story; however, it turned out to be more confused for their identities —human being and vampire. After Twilight was published, many scholars had given researches about it, but there were not systematic studies about the love between Edward and Bella. This thesis focuses on analyzing the love between Edward and Bella (humans and vampire) by using the triangular theory of love ，and conclude that their love was not obscene and different but pure and super. 

Key words: vampire; the Triangle Theory of Love；consummate love

中文摘要:美国女作家史蒂芬妮·梅耶的魔幻小说暮光之城系列，讲述了女高中生贝拉和青春帅气的吸血鬼爱德华之间的爱情故事。《暮光》作为四部曲中的第一部，描述了贝拉和爱德华从相遇、相知到决定相守的曲折故事以及为了守住真爱而克服重重困难的决心。看似简单的爱情故事，却因为主人公身份的特殊—人和吸血鬼而变得格外复杂。《暮光之城》出版后，许多学者对此进行了研究，但对于爱德华和贝拉之间的爱情缺乏一个系统的研究。本文将用爱情三元论来解析爱德华和贝拉的爱情，说明他们之间的爱情并不是肮脏和扭曲的感情，而是真正超越人类的纯真爱情。

关键词：吸血鬼;爱情三元论；完美之爱