Code organization

corg.php

// sth above

<?php if ( $related_posts->have_posts() ): ?>
<h3> Related Posts</h3>
  <ul>
    <?php while ( $related_posts->have_posts() ): $related_posts->the_post(); ?>
      <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?> </a></li>
    <?php endwhile; ?>
  </ul>
<?php endif; ?>

// sth below