TWILIGHT SAGA!! You have proabably heard this a million times, but they are so amazing and enticing and adventurous and romantic and words cannot describe. I read the last three(way over 1000 pages) in one week and a day. Ya, they are that good. The writing is amazing and she makes you be in the story, not someone outside of it. You feel with the characters. You fall in love with them. And everyone says they don't want to be obsessed like everyone who has read them, but believe me, it is so so so worth it. I feel at a lack of words when I attempt to describe these books and I never feel like that. I don't even begin to do them justice.
Hope I helped!!