Thought I admit the beginning confused me -- having read the first book a while ago and unable to remember all of the secondary characters -- a little reminder would have been preferable.
But don't worry, they'll be too many things going on to keep these two away on separate paths. For those who might find the start a bit slow, I recommend you hang in there. It gets better.
On another note: Actress Shailene Woodley has been chosen to play Tris on the upcoming Divergent movie. What are your thoughts -- does she look the part?