Codecademy - Nested for loop

let bobsFollowers = ['Jane', 'John', 'Marie', 'Ben'];
let tinasFollowers = ['Jane', 'Louise', 'Marie'];

let mutualFollowers = [];

for(let i=0;i<bobsFollowers.length;i++){
  for(let k=0;k<tinasFollowers.length;k++){
    if(bobsFollowers[i] == tinasFollowers[k]){
      mutualFollowers.push(bobsFollowers[i]);
    }
  }
}