diff --git a/buggy.py b/buggy.py
--- a/buggy.py
+++ b/buggy.py
@@ -10,8 +10,6 @@
     if ope == 1:
         dic[user1].add(user2)
     elif ope == 2:
-        if user1 in dic[user2]:
-            dic[user2].remove(user1)
         if user2 in dic[user1]:
             dic[user1].remove(user2)
     else:
