Will a boy who likes a girl loudly say "fuck off" to you in public?

I don't think so. If so, maybe he doesn't like this girl that much at all. Everyone is proud, and girls are no exception. Besides, the person who said this flaunts that he likes her, and it hurts to say so in private, not to mention in public. Or although he likes her, he didn't change his temper for her. No matter who is right or wrong, he doesn't care about girls' faces in public and shows his quality. This kind of behavior is not desirable.