 The Twilight series falls under the genre of young adult , fantasy , and romance , though Meyer categorized her first book , Twilight , as " suspense romance horror comedy " . However , she states that she considers her books as " romance more than anything else " . The series explores the unorthodox romance between human Bella and vampire Edward , as well as the love triangle between Bella , Edward , and Jacob , a werewolf . The books avoid delving into provocative sex , drugs , and harsh swearing because , according to Meyer , " I don 't think teens need to read about gratuitous sex . " 
