Oh, I remember being obsessed with a guy - Arkarian - I read about in a trilogy when I was eleven or twelve.

And Henry from The Time Traveler's Wife tugs my heartstrings every time.

Bowman from The Wind on Fire trilogy.

Fiyero from Wicked, the Life and Times of the Wicked Witch of the West.

Campbell from My Sister's Keeper.

Thing is, I tend to form affectionate feelings or fondness for characters without considering them attractive. I sort of adore Bernard and the World Director (or is it Controller?) from Brave New World.