Why is the copy constructor not called?

class MyClass
{
public:
  ~MyClass() {}
  MyClass():x(0), y(0){} //default constructor
  MyClass(int X, int Y):x(X), y(Y){} //user-defined constructor
  MyClass(const MyClass& tempObj):x(tempObj.x), y(tempObj.y){} //copy constructor

private:
  int x; int y;
};

int main()
{
  MyClass MyObj(MyClass(1, 2)); //user-defined constructor was called.
  MyClass MyObj2(MyObj); //copy constructor was called.
}

In the first case, when MyClass(1, 2) calls the user-defined constructor and returns an object, I was expecting MyObj to call the copy constructor. Why it doesn't need to call the copy constructor for the second instance of MyClass?