Prevent ability to add yourself as a friend

litecord/blueprints/relationships.py

@@ -228,6 +228,9 @@ async def post_relationship():
     if not uid:
         raise RelationshipFailed("No users with DiscordTag exist")
         
+    if uid == user_id:
+        raise RelationshipFailed("Tried to add themselves as friend")
+
     res = await make_friend(user_id, uid)
 
     if res is None: