@a7 @RustyCrab

He's was not obsessed with her, he was obsessed with Cybil Shephard's character.

He's a cabbie so he see a lot of whats going on in the streets at night and he saw Jodie hooking, and being taken advantage of by older men. Travis Bickle was very much a moral man. And he wanted to help her get off the streets and back to her family.

Because of his wierd superhero complex about cleaning up the filthy streets, he hatches the plan to kill her pimps and get her out of there.