Bernardo: Get your hands off, American...Stay away from my sister.
Tony: Sister?
Bernardo: Couldn't you see he's one of them?
Maria: No. I saw only him.
Bernardo: There's only one thing they want from a Puerto Rican girl.
Tony: That's a lie!
Riff: Later, Tony.
Chino: Get away.
Tony: Stay out of this, Chino. [To Maria] Don't listen.
Bernardo: She will listen to her brother before she listens to you.
Tony: Sister?
Bernardo: Couldn't you see he's one of them?
Maria: No. I saw only him.
Bernardo: There's only one thing they want from a Puerto Rican girl.
Tony: That's a lie!
Riff: Later, Tony.
Chino: Get away.
Tony: Stay out of this, Chino. [To Maria] Don't listen.
Bernardo: She will listen to her brother before she listens to you.
Bernardo : Get your hands off, American...Stay away from my sister.
Tony : Sister?
Bernardo : Couldn't you see he's one of them?
Maria : No. I saw only him.
Bernardo : There's only one thing they want from a Puerto Rican girl.
Tony : That's a lie!
Riff : Later, Tony.
Chino : Get away.
Tony : Stay out of this, Chino. [To Maria] Don't listen.
Bernardo : She will listen to her brother before she listens to you.
http://www.moviequotedb.com/movies/west-side-story/quote_29501.html