diff --git a/src/Features/HasRelationships.php b/src/Features/HasRelationships.php
index 1b847ec..380e071 100644
--- a/src/Features/HasRelationships.php
+++ b/src/Features/HasRelationships.php
@@ -18,6 +18,20 @@ trait HasRelationships
         HasOne,
         HasMany;
 
+    /**
+     * Does this model have a relationship for a given field?
+     *
+     * @param string $attribute
+     * @return boolean
+     * @author Ronan Chilvers <ronan@d3r.com>
+     */
+    public function hasRelation($attribute)
+    {
+        $method = $this->getRelationMethod($attribute);
+
+        return method_exists($this, $method);
+    }
+
     /**
      * Get the relation for a given attribute
      *
@@ -26,12 +40,25 @@ trait HasRelationships
      */
     public function getRelation($attribute)
     {
-        $shortAttribute = static::unprefix($attribute);
-        $method = 'relate' . Str::pascal($shortAttribute);
+        $method = $this->getRelationMethod($attribute);
         if (method_exists($this, $method)) {
             return $this->$method();
         }
 
         return null;
     }
+
+    /**
+     * Create a relationship method for a given attribute name
+     *
+     * @param string
+     * @return string
+     * @author Ronan Chilvers <ronan@d3r.com>
+     */
+    protected function getRelationMethod($attribute)
+    {
+        $shortAttribute = static::unprefix($attribute);
+
+        return 'relate' . Str::pascal($shortAttribute);
+    }
 }
diff --git a/src/Model.php b/src/Model.php
index 1cd0c0d..d9aacd7 100644
--- a/src/Model.php
+++ b/src/Model.php
@@ -200,7 +200,14 @@ protected function boot()
      */
     public function __isset($attribute)
     {
-        return $this->hasAttribute($attribute);
+        if ($this->hasAttribute($attribute)) {
+            return true;
+        }
+        if ($this->hasRelation($attribute)) {
+            return true;
+        }
+
+        return false;
     }
 
     /**
@@ -275,6 +282,9 @@ public function serialize()
     public function unserialize($serialized)
     {
         $this->fromArray(unserialize($serialized));
+        if ($this->useTimestamps()) {
+            $this->bootHasTimestamps();
+        }
         $this->boot();
     }