Archived as a pdf file. Available upon request at a later date: "mileschen's Xanga Site - From Friends to “More than Just Friends”.pdf"
It's targeted for guys though. So someone should write one for girls. ::nodnod::
Hmmm, here's a random recommendation:
John & Jen - http://www.sendspace.com/file/67oe0s
Libretti here: http://libretto.musicals.ru/text.php?textid=499&language=1
It's a two-person musical. Rather interesting and tells the story between a younger brother and older sister.
It first caught my attention when my iPod Shuffle popped up with track 05 - Timeline.