diff --git a/src/aretherecookies/auth.clj b/src/aretherecookies/auth.clj
index de28ead..895e2c9 100644
--- a/src/aretherecookies/auth.clj
+++ b/src/aretherecookies/auth.clj
@@ -2,14 +2,18 @@
   (:require [buddy.auth.backends :as backends]
             [clj-http.client :as client]))
 
+(def tokens (atom {}))
+
 (defn facebook-me [token]
   (client/get (str "https://graph.facebook.com/me?access_token=" token) {:accept :json}))
 
 (defn facebook-me-ok [token]
-  (= (:status (facebook-me token)) 200))
+  (= 200 (:status (facebook-me token))) (swap! tokens assoc (keyword token) true))
 
 (defn facebook-token-auth [_ token]
-  (if (facebook-me-ok token) token))
+  (cond
+    (get @tokens (keyword token)) token
+    (facebook-me-ok token) token))
 
 (def auth-backend
   (backends/token {:token-name "facebook-token" :authfn facebook-token-auth}))
\ No newline at end of file