You two had better not eat out often. You can go home and cook for your boyfriend, because the food outside is delicious, but because they use a lot of spices to flavor it. Most of the food outside tastes very strong, such as salty, spicy and sour. Sometimes they put a lot of spices in order to make the food look good, which is very bad for your health and conducive to people getting fat.
When cooking at home, you can eat lightly, eat less meat and eat more vegetarian dishes, but you should also pay attention to the reasonable collocation of vegetarian dishes and not eat them all. After dinner, most people will sit there and rest and watch TV. At this time, you should supervise your boyfriend. Don't let him sit down. Let him stand for half an hour. Just tell him that if you sit down immediately after a meal, fat will easily accumulate in your abdomen, thighs and buttocks. Why do men need such a big ass? And if a man has a big belly, it is super ugly. Just tell him clearly and supervise him. After eating, stand for half an hour or wash dishes, clean the living room, and take a rest after half an hour's slow movement.
Supervise your boyfriend and don't let him eat snacks, but it seems to me that boys rarely eat snacks, but accidents will inevitably occur. Clean up all the puffed food in your house, beer and cola in the refrigerator and some functional drinks, and replace them with yogurt, fruits and nuts. Let him eat some fruit and drink some yogurt before meals, so that he can easily feel full, eat less when eating, and in the afternoon. If you are tired from work or study in the afternoon, eat some nuts, but don't eat too many nuts. Drink some yogurt and eat some digestible and mild fruit. After all, it's almost evening, and eating some cool fruit is not good for your stomach. In this way, he can eat less at night and consume less energy, so he can accumulate less fat.
Finally, don't forget to exercise. You can exercise with him or supervise him. Be sure to exercise every day. You'd better go to the gym to get a card, and then your boyfriend and girlfriend will go together, so that you can be motivated and last longer.