<?php
$user_id = get_current_user_id();
$user_comments = get_comments(array(
'number' => -1,
'status' => 'approve',
'user_id' => $user_id
)); ?>
<ul>
<?php
foreach($user_comments as $user_comment){
echo '<li><a href="' . get_comment_link($user_comment) . '" target="_blank">' . get_the_title($user_comment->comment_post_ID) . '</a><p>' . $user_comment->comment_content . '</p></li>';
}
?>
</ul>