Friendship is two-sided. It isn't a friend just because someone's doing something nice for you. That's a nice person. There's friendship when you do for each other. It's like marriage - it's two-sided.
Christ does not dress up a moral picture, and ask you to observe its beauty. He only tells you how to live; and the most beautiful characters the world has ever seen, have been those who received and lived these precepts without once conceiving their beauty.