What is the right way to allow users to make friends on Backbone)?

Question

MongoDB

And so, there is a mongo user model

var userSchema = new Schema({

    name:{
        required: true,
        type: String
    },
    email:{
        unique: true,
        required: true,
        type: String

    },
    password:{
        required: true,
        type: String
    },

    admin: {
        type: Boolean,
        default: false
    }

});

Now I want to give users the opportunity to be friends with each other. There is such an idea, but I'm not sure how correct it is to do so.
I plan to do so. Extend mongo model with friends array

var userSchema = new Schema({

    name:{
        required: true,
        type: String
    },
    email:{
        unique: true,
        required: true,
        type: String

    },
    password:{
        required: true,
        type: String
    },

    admin: {
        type: Boolean,
        default: false
    },

    friends: []
});

The array will be pushed by objects with id and status properties. Below is an example of filling the friends array when Vasya sent a request to Petya (Peter and Vasya are instances of the Backbone model)

vasya.friends
    {
  id: '56cc82a5244575d800d1acab', // пети _id 
  status: outcomeRequest
  }
  
  petya.friends
    {
  id: '76cc8d5fbf31sf8ac06cffc5a',  // васи _id
  status: incomeRequest
  }

If Petya accepts the request, the status changes for both to status (status: friend), if not, the object is deleted.
Would it be right to do so?