Okay! After gathering feedbacks from the our forumers, I have
decided to admit my sin to her, and seek for her forgiveness.
Then buy her a cake and celebrate together
tomorrow, and wish her belated birthday~
I really totally don't know how to handle situation like this~
Thank you guys so much! 
Best regards,
Chin Seng
This is only level 1~~~
wait till u experience level 2: Forgetting your gf/bf
birthday...
Then there's Hell @ level 3: Forgetting your husband/wife
birthday
