Need help with foreach and query_posts example

Running into a snag with the following code:

global $post;
		$terms = get_the_terms( $post->ID , 'relationship');
		$do_not_duplicate[] = $post->ID;

		if(!empty($terms)){
    		foreach ($terms as $term) {
        		query_posts( array(
        		'relationship' => $term->slug,
        		'caller_get_posts' => 1,
        		'orderby' => 'rand',
        		'showposts' => 3,
        		'post__not_in' => $do_not_duplicate
        		) );

        	if(have_posts()){

            while ( have_posts() ) : the_post(); $do_not_duplicate[] = $post->ID; ?>

			<div class="related"><a href="<?php the_permalink() ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_post_thumbnail('product-thumbnail'); ?></a></div>	

			 <?php endwhile; wp_reset_query();
        					}
    				}
			}

It calls up 3 posts per tag. So if the current post has 4 tags, I get 12 thumbnails. I only want 3 thumbnails no matter how many tags exist. How can I separate the “for each” from the show posts?