Hazel Grace and Augustus, Bella and Edward, and eight more made-for-each-other teen duos who made us believe in love, no matter the circumstances (WARNING: SPOILERS!)
First Encounter: They meet at a New Year's Eve party a suitably low-key beginning for one of young adult fiction's most realistic, relatable relationships.
Defining Moment: The first time Katherine and Michael are alone together, he turns to her and says, ''Can I kiss you?'' Coupledom was simple as that in 1975.
Relationship Challenges: After high school graduation, the two separate for the summer, and Katherine finds herself attracted to a fellow camp counselor. How can young love survive?
Why They Work: The secret to this sweet, ultimately mundane romance lies in this statement from author Judy Blume: ''My daughter Randy asked for a story about two nice kids who have sex without either of them having to die.'' Hillary Busis