friends_action_add_friend()

function friends_action_add_friend() {
	if ( !bp_is_friends_component() || !bp_is_current_action( 'add-friend' ) )
		return false;

	if ( !$potential_friend_id = (int)bp_action_variable( 0 ) )
		return false;

	if ( $potential_friend_id == bp_loggedin_user_id() )
		return false;

	$friendship_status = BP_Friends_Friendship::check_is_friend( bp_loggedin_user_id(), $potential_friend_id );

	if ( 'not_friends' == $friendship_status ) {

		if ( !check_admin_referer( 'friends_add_friend' ) )
			return false;

		if ( !friends_add_friend( bp_loggedin_user_id(), $potential_friend_id ) ) {
			bp_core_add_message( __( 'Connection could not be requested.', 'buddyboss' ), 'error' );
		} else {
			bp_core_add_message( __( 'Connection requested', 'buddyboss' ) );
		}

	} elseif ( 'is_friend' == $friendship_status ) {
		bp_core_add_message( __( 'You are already connected with this user', 'buddyboss' ), 'error' );
	} else {
		bp_core_add_message( __( 'You already have a pending connection request with this user', 'buddyboss' ), 'error' );
	}

	bp_core_redirect( wp_get_referer() );

	return false;
}