what is the significance of raina and bluntshli's first meeting

Any first meeting helps characters assess one another and figure out how to treat one another during the rest of the story. Raina is engaged to someone else, Sergius Saranoff, a war hero whom she greatly admires. When Bluntshli breaks into her room, she is first frightened, but then willing to hide him to save him from being killed. She thinks him a coward; he does not even carry the weapons of war. However, she helps him get to safety by disguising him and sneaking him out of her house. This sets them up to perhaps meet again.