No one is friend of no one. This is international politics and here only the national interests matters as they should. If its in the interest of a nation to stand with another, then they will otherwise they wont.

Pak and China have same interest thats why we call ourselves friends. There was a time when USSR was our enemy, they hurt us, we hurt them and now we can call ourselves friends, same is the case with USA and Japan, they destroyed each other and now they are friends.

So don't fall for this friendship lollypop.. Pakistan needs to grow and grow real fast as the time is changing very rapidly and i believe we are on the right track,. once powerful everyone wants to be your friend otherwise no one cares about u..