My anxiety

Seriously..ever since JKR announced the name of the new book Harry Potter and the Half Blood Prince...I can hardly control my excitement...I remember..I got up at 7am and went to the book store in bombay to get the 5th book when it released...ya I know I am crazy!!
who is this half blood prince?? Lupin?? Hagrid?? well they r all half bloods!!
any theories on the plot ahead??
and how long is she goin to take to finish this book??

Why have I been enchanted by these books so much??? and why am i just a Muggle??? yup certainly losing it now...someone admit me in St. Mungo's
Lehmunade's got some spoilers on book 6..if you guys interested...
well...hope that the new book comes soon!!
Enjoy!!