Laravel Fractal Eager Loading

Question

I'm using Laravel 5.3 with Laravel Fractal. I'm building a forum so when I want to receive all forums I do that like this:

$forums = Forum::with('messages', 'messages.user')
            ->latest()
            ->paginate(10);

        return fractal()
            ->collection($forums)
            ->transformWith(new ForumTransformer())
            ->paginateWith(new IlluminatePaginatorAdapter($forums))
            ->respond();

Then in ForumTransformer I'm doing this:

<?php

namespace App\Jenssen\Forums;

use League\Fractal;

class ForumTransformer extends Fractal\TransformerAbstract
{
    public function transform(Forum $forum)
    {
        return [
            'id'                => $forum->id,
            'slug'              => $forum->slug,
            'name'              => $forum->name,
            'total_messages'    => $forum->messages->count(),
            'message_user'      => $forum->messages->first()->user->name . ' ' . $forum->messages->first()->user->last_name,
            'created_at'        => $forum->created_at,
            'updated_at'        => $forum->updated_at
        ];
    }
}

Is this a n+1 problem? Or does Laravel use the eager loaded relationship in the ForumTransformer class?