You know how you're supposed to take the "bad" with the "good" when you have a friendship? That's about personality stuff. What someone likes or doesn't like, whether they're shy or outgoing, if they like sushi and you hate it, if they love snakes and spiders and you can't stand them. If they like all kinds of music and you only like rock, or you only like rap, or you only like classical. If they would rather hike than bike, and you would rather bike than hike. It's NOT about how they treat you, or how you treat them. It is NOT a part of being a "friend" to accept ill and callous or self-centered treatment, and it's especially not being a friend if you expect another person to accept it from you.