Chapter 6 Response

In chapter 6 Holden gets into a fight with his room mate, I don't think his room mate actually know what the fight was about, but Holden is practically in love with the girl Stradlater went on a date with. Holden thinks he had sex with her, and became very upset. Holden calls him names and such, but Stradlater is a tough jock type, he ends up just knocking out Holden. I don't know these two's past but I think this may be their fist major conflict, I'm guessing this because before in chapter 3-4 Holden seemed to almost like Stradlater.