SOLVED. The book is mainly about a spy girl who tries protect a guy. [s]

[Okami]

The book has a yellow cover, with the pattern of a picnic table, and has either the words "ketchup" or "eggs" as the title. The book starts off with a girl who was raised by old men spies, and they need to infiltrate a camp (not sure about the camp) for teenagers. However, they cannot go because they are old men so they ask their teenage girl who they have raised, in isolation (not sure about isolation), to infiltrate the camp as an undercover spy to protect this rich boy (maybe rich). Throughout most of the book she is surrounded by the rich boy's friends, maybe 5 of his friends (like a reverse harem). Towards the end she dates the rich boy. I remember the book said that one of the boys was like chocolate? I also remember that the boy she was protecting didn't like her at first. The intended age-range was young adult, non-fiction. I believe I read the book in the year 2004-2010.

[Cruth]

Okami wrote: "The book has a yellow cover, with the pattern of a picnic table, and has either the words "ketchup" or "eggs" as the title. The book starts off with a girl who was raised by old men spies, and they..."

This sounds about right but cover doesn't match your description.

Sunnyside Up with Red Ketchup by Ashley Andrews

[Okami]

Thank you, that was it. :)