Friendship

Throughout the novel the reader sees that friendship is very important to Greg. However, Greg's definition of friendship seems to shift and to sometimes change with who he's around and the situation he is in. His longtime friend, Rowley, is still his go-to friend. At school he sometimes walks with him, but for the most part, they go their separate ways.

At one point, Greg is jealous of Rowley because he has been invited to sit with the popular girls at their table. Greg can't understand how Rowley is more popular than he is. Greg considers himself to be vastly superior to Rowley and he treats Rowley like this.

So, initially, the idea of friendship for Greg includes being with someone because of what they can potentially do for you. This is true when Greg needs a ride somewhere and his parents or Rodrick aren't around...