Question: what do you do when your girlfriend is mad?
Answer: Keep aside your ego and talk to her. One of the biggest problems in every relationship is “Ego”. ... 
Apologize to her. Saying “sorry” is the best practice to show confession. ... 
Listen to her. ... 
Give her a hug. ... 
Treat her. ... 
Make her laugh. ... 
Be sweet to her. ... 
Make her feel loved.