whats the name of this book?

[danewesley]

the book is about a brother and a sister who go away to a summer camp, whilst theyre there they experiment with drugs etc and make trouble and eventually the brother gets a girl pregnant.... after they all go home from camp the brother finds out that the girl had the baby so the book ends with him knocking on her door with a bunch of flowers.

my girlfriend read this book in highschool and cant remember what it was called, so any clues would be a great help. thanks

[Fraizer123]

Book identification links.

http://www.whatsthatbook.com/

http://forums.abebooks.com/abesleuthcom

http://www.loganberrybooks.com/stump.html

http://www.librarything.com/groups/namethatboo k