SOLVED. YA book published around 2006-2009 where the reader made choices for the character so you would skip around the book. At one point the main character gets really ill from drinking tons of water. The cover on one book was blue and the other was red.

[Megan]

This has been haunting me for days! I’ve searched for over an hour tonight trying to get any closer to finding this book. I think one of the love interests name was Reese and the main character had a friend named Cecelia, too.

[Rainbowheart]

Was it primarily a romance?

Could be something in the Choose Your Boyfriend: Date Him or Dump Him series. The Campfire Crush is the first book.

[Daniel]

It could be part of a Choose Your Own Adventure series.

https://en.wikipedia.org/wiki/Choose_...

[Megan]

Thanks, everyone! I found the series… it was called “What if…?” by Liz Ruckdeschel and Sara James

[David]

Glad you found your book!

Could you specify which one? Liz Ruckdeschel seems to have several "What if... X" books, with different Xs.