diff --git a/src/Observers/BelongsToManyObserver.php b/src/Observers/BelongsToManyObserver.php
new file mode 100644
index 0000000..601157a
--- /dev/null
+++ b/src/Observers/BelongsToManyObserver.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace KirschbaumDevelopment\NovaInlineRelationship\Observers;
+
+use Illuminate\Support\Arr;
+use Illuminate\Database\Eloquent\Model;
+
+class BelongsToManyObserver extends BaseObserver
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function updating(Model $model, $attribute, $value)
+    {
+        $parentModel = $model->{$attribute}();
+        $parentModel->sync([]);
+        $targetModel  = $parentModel->getRelated();
+        foreach($value as $v){
+            $row = $targetModel::find($v['modelId']);
+            if($row){
+                $row->update($v['fields']);
+            } else {
+                $row = $targetModel::create($v['fields']);
+            }
+            $parentModel->attach($row[$targetModel->getKeyName()]);
+        }
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function created(Model $model, $attribute, $value)
+    {
+        $parentModel = $model->{$attribute}();
+        $parentModel->sync([]);
+        $targetModel  = $parentModel->getRelated();
+        foreach($value as $v){
+            $row = $targetModel::find($v['modelId']);
+            if($row){
+                $row->update($v['fields']);
+            } else {
+                $row = $targetModel::create($v['fields']);
+            }
+            $parentModel->attach($row[$targetModel->getKeyName()]);
+        }
+    }
+}