How we cite our quotes: (Part.Paragraph)
Quote #4
It's camaraderie and friendship and flirtation, and none of it is familiar to me. (2.22)
Friendship is puzzling enough to Four. No wonder he's so bad at romancing Tris later on. He doesn't get social cues at all.
Quote #5
I should feel satisfied, not afraid. Maybe even happy, to finally belong somewhere, to be among people whose eyes don't skirt mine at the lunch table. […] What is the cost of being Dauntless? (2.155)
Friendship is a double-edged sword. Without friends, Four only had to look after himself. Now he's responsible for helping and taking care of others too, people he cares about.