Bridge to Terabithia by Katherine Paterson

This book is about a boy at the age of ten. His name is Jess Aarons. And one day someone moved in next door. They had a girl named Leslie Burke. Together they used there imagination and they "ruled a land"it they called it Terabithia but that didn't last long.One day the creek was high and Leslie fell in while Jess was away.  He missed her very much.He was heart was broken. 

I like this book because they are full of imagination. 

There is also a movie.