No complaints no demands

 I always heard of term no complaints no demands, specially in friendship. But does anyone actually know the actual meaning of it? In some situations we need to think deeply on something particular, and this term was that 'something particular' for me most of the times. So, now i directly come to the point. People think no complaints and no demands makes relationship/friendship work. But people actually are taking it for granted. The term no complaints no demands means you dont need to complain or demand. Yu need to make such a beautiful understanding relation that yu don't have to complain about anything or demand anything. But if it's not going that way, complaints and demands are necessary to make each other understand the things. Send me your opinions about it. Thankyou.