i think the plot of this book is solid, although it is not about friendship as people told. it is about a girl learning about life. it portrays a beautiful, realistic, the-way-it-should-be friendship between girls and boys, but that is not the main theme, that is the backbone of the story, which makes it solid. But the main story is the one between reagan and matt, how they meet, feel attracted, try to stay away (she) or get close (he) and in the end fall for each other. the drama at the end was a bit exaggerated but that's how reagan is. 
 i did like matt and dee (i would have love to be able to read parts of the book from her point of view), but it was very difficult to relate or empathise to reagan, she was too full of herself for her own good and sometimes was just an idiot !! i did like her inner dialogues, though (but not the ones critisicing every single female who wasn't dee, that was the part of her being an idiot !!). 
 i like a lot reagan and matt's interactions to the point that when their scenes were finished i wanted to skip the rest until their next scene together. i think this is mostly because of matt... i wanted him to come back. every time he went away, i wanted him to come back xD 
 nevertheless, i enjoyed the book a lot more than i thought i was. it's a cute road-trip summer read (even if it doesn't feel as a road-trip-ish as roger & amy's epic detour), quite realistic in the characters development. highly recommended for the summer ^__^