So I just noticed that if you have a pending friend request with a member and you roll your mouse over their avatar, you get the befriend button. I will change this shortly to say accept friendship but in the mean time.
If you have a pending friend request with them and befriend them that way, there's not notification that they accepted your friend request until now......
in the file list_pop.php around line 407 find this
//send system alert
bx_import('BxDolAlerts');
$oZ = new BxDolAlerts('friend', 'accept', $iMemberId, $iProfileId);
$oZ->alert();
ADD THIS
###
#SteveSoft
#05-15-2012
#
//-- send email notification --//
$oEmailTemplate = new BxDolEmailTemplates();
$aTemplate = $oEmailTemplate -> getTemplate('t_FriendRequestAccepted') ;
$aRecipient = getProfileInfo($iMemberId);
// passing all necessary data
$aPlus = array(
'Recipient' => $aRecipient['NickName'],
'SenderLink' => getProfileLink($iProfileId),
'Sender' => getNickName($iProfileId),
);
// send notification
sendMail( $aRecipient['Email'], $aTemplate['Subject'], $aTemplate['Body'], '', $aPlus );
//--
#
And they will now get an email saying friendship accepted, IF a friend request is pending.