Why am I not able to output a string in this particular case? - Multiple type class template with int & string types

This is my current code, only thing that I can't get to work right now is outputting the second variable b which is of type string.

#include <iostream>
#include <string>
using namespace std;

template<class TypeA, class TypeB>
class Pair
{

public:

//default constructor
//initialize both members to their default values
//as per data type of Type1 and Type2
Pair() : a(TypeA()), b(TypeB()) {};

//parameterized constructor taking TypeA and TypeB to
//initialize values of a and b:
Pair(const TypeA& one, const TypeB& two) :
    a(one), b(two) {}

//copy-constructor to copy one Pair object from 
//another Pair object exactly same type:
Pair(const Pair<TypeA, TypeB>& rhs) :
    a(rhs.a), b(rhs.b) {}


void write(const TypeA&, const TypeB&);
void read();

private:

TypeA a;
TypeB b;
};


template<class TypeA, class TypeB>
void Pair<TypeA, TypeB>::write(const TypeA& one,const TypeB& two)
{
    a = one;
    b = two;
}

template<class TypeA, class TypeB>
void Pair<TypeA, TypeB>::read()
{
    std::cout << "These are the values: " << a << b << std::endl;
}

int main()
{
    Pair<int, std::string> object1;
    object1.write(1, "one");
    object1.read();

    system("Pause");
    return 0;
}

If I remove the b from the read() code it prints the single 1 fine. However, if I run it as is I get the following error:

C2679 binary '<<': no operator found which takes a right-hand operand of type 'std::string' (or there is no acceptable conversion)

I tried overloading the operator<< but I haven't been able to wrap my mind around the syntax once you trow multiple typesets into the mix...

Any help is appreciated.