My girlfriend doesn't like joking. When I joke, she is really angry, so we often quarrel!

Your girlfriend will lose her temper because of your joke because she cares too much about you. She believes everything about you. What you said to her is a joke to you, but not necessarily to her, especially when it comes to what she thinks may happen in the future. When you say something frivolous or joking, she will find it hard to trust you and break up with you.

I don't think you should make too many jokes about feelings.

Yes, jokes are a condiment in life, but you have to see whether you put salt or sugar to make this "dish" delicious.