First of all, it is wrong for your girlfriend to go on a diet to lose weight, which will cause your bad taste. Let your malnutrition lead to anemia, so don't let your friends and girlfriends go. Go on a diet to lose weight and eat a normal diet, but you can eat a small amount of fat meat, chicken breast, fish and protein high meat, and then you can eat a small amount of beef. Secondly, you can eat more cauliflower. For example, you can eat and drink a glass of milk in the morning and order some flowers. How about having some beef jerky at noon? Eat cauliflower. You can also eat a small amount of chicken breast and fish. On this night, if you are not hungry, you can also try to eat fruits and vegetables with salad. Secondly, you should also pay attention to physical exercise. You can often go out to exercise, run or do some other sports with your girlfriend, which will help you lose weight.