Reading text file

I am new to programming in C++ but I am currently trying to read a text file and then wanting to print it in the console. The text file is 500x2 where the first column is r and the second column is theta. When I build and run the program it. In the console, I would like it to print the values exactly how it is shown in the text file, that is:

0.005 3.1485
0.005 6.1749
etc.

Instead the data is printed out like this:
0.005 0.005
3.1485 3.1485
0.005 0.005
6.1749 6.1749


I have attached my code below and any help would be greatly appreciated.

Code:

#include <vector>
#include <fstream>
#include <iostream>
int M = 500;
int main(){
std::ifstream myFile;            //creates stream myFile
 myFile.open("random_cylind.txt");  //opens .txt file

std::vector<double>r;  //vector to store the numerical values in
std::vector<double>theta;
double number = 0 ;
while(myFile >> number){   
    r.push_back(number);
    theta.push_back(number);
}
for (int i = 0; i < r.size(); i++){
    std::cout << r[i] << theta[i] << std::endl;
        }
    return 0;
}