Breaking Dawn,because its the one where Edward and Bella get married and go on their honeymoon and finally have sex.I amor Edward and Bella!!!Twilight the first book is a very close segundo because they meet and fall in love.
they're all good in their own way. Twilight is the beginning of everything, there's a lot of Jacob in New Moon & i amor the ending of that book. Eclipse is so *beep* good all the way through. (and their kiss OMG!) but i amor Breaking Dawn too. epecially the "second book" Jacob.
hard to choose a favourite but i guess it's either Eclipse o Breaking Dawn. o New Moon. o Twilight. it's no use...
totally Breaking Dawn!! I amor it 'cause Bella finally gets turned to a vamp and her powers are epic! I literally read B.D. like 4 times, keeps gettin better every time i read it. Breaking Dawn ftw!!