Does Holden consider his roommates as his friends in Catcher in the Rye?

Holden willingly writes Stradlater's composition for him even though he is going out on a date with Jane Gallagher, Holden's dream girl. Now you could say, well Stradlater is his roommate so he just wants to keep the peace, but its more than that, he also lends him his hound's-tooth jacket.