Repeating code, how to stop that

here the blog

I’m trying to add some text right before the title heading of the first post, but everytime I add the code in index.php, it gets duplicated 3 times, so basically the next 2 articles will have the text in front of their title as well.

this is the code from index.php

<?php $countervariable=1; if (have_posts()) : ?>
<?php while (have_posts()) : the_post(); ?>

<div class="Post" style="padding-bottom: 50px;">
<div class="PostHead">
<h1 class="title"><a href="#"></a><a title="Permanent Link to <?php the_title(); ?>" href="<?php the_permalink() ?>" rel="bookmark"><?php the_title(); ?></a></h1><!-- google_ad_section_end -->
 <p class="PostDate">

   <strong class="day"><?php the_time('d'); ?></strong>
   <strong class="month"><?php the_time('M'); ?></strong>
 </p>
  <p class="PostInfo">Posted by <?php the_author() ?> as <em><?php the_category(', ') ?></em></p>
</div>
   <div class="KonaBody">
<div class="PostContent">

<?php if(is_home() && $post==$posts[0]): ?>

<?php endif ?>

any ideas why?

thank you