Annoying MissingReferenceException with Interfaces and Monobehavior

So I am somehow getting a weird misisng reference exception. I have a script "Block" that doesn't inherit from Monobehavior, but it links to an "IBlockScript" interface which is also a Monobehavior.

The issue here is that when the Monobehavior side is destroyed, the Interface side still isn't null. I can try to check if the Script is null (but that always returns false even if it was destroyed)

     public IBlockScript Script { get; private set;}
     public GameObject gameObject
     { 
         get
         { 
                 //SOMEHOW Script is NEVER null even when it's Monobehavior is destroyed...
                 //so this check is always false.
                 // and the code pops an MissingRefenceException when it gets to Script.gameobject
                 if(Script == null || ReferenceEquals(Script,null))
                 return null;
 
                 try
                 {
                      return Script.gameObject;
                 }
                 catch(MissingReferenceException e)
                 {
                     return null;
                 }
         }
     }
     public Transform transform 
     { 
         get
         { 
             if(gameObject==null)
                 return null;
 
             return gameObject.transform;
         }
     }

I'm forced to using try/catch in order to return properly and I reeaaaallly don't like doing that, is there a better way of doing this? This error typically happens when I stop the player or load a new level (when the Iblockscripts are getting unloaded)