Dash & Lily's Book of Dares by Rachel Cohn & David Levithan
I'm also going to add the sequel The Twelve Days of Dash & Lily for you. This should complete your (current) stash of books from me, and I will post them as soon as I can.
Wow this tag is going fast today! If anyone is struggling at the moment with the price of posting a book and/or you'd like to get yourself up here to be tagged, I've got a lot of books to read right now but I'd love some bookcrossing supplies like BC plates, labels, release bags, BC bookmarks etc that can be envelope posted to make it less costly if that helps?