So, I think the speech is very important. On the other hand, I think you can motivate him at an appropriate time. You can't ask him to go to the gym or exercise every day, and then you can eat potato chips and watch TV at home every day. Then it may be difficult for your boyfriend to have such a plan. You can start with yourself. For example, if you are plump, you can sign up for a fitness class, bring your boyfriend, and we can do some sports for two. If you are not so fat or even thin, consider taking your boyfriend to climb the mountain occasionally. If your boyfriend is fat, he may get tired easily when climbing mountains. You can even realize your intention yourself and start some exercise.
I think you can express your love at an appropriate time when conditions permit. For example, besides exercise, the most important thing to lose weight is to pay attention to diet, so if you two usually focus on sales, can you consider starting to make some nutritious breakfast and lunch, then mix vegetarian and vegetarian food, and then control the intake of oil and high protein reasonably, your boyfriend will certainly understand and be moved.
I think this is a good development, because boyfriends can be driven by you, or persuaded, and then start exercising. Because people can't wake a person who has been pretending to sleep. If your boyfriend is anything, it is a slow response. You can consider taking your boyfriend for a physical examination. If his obesity has reached the level of affecting his health, he will be given a warning, and this direct impact will be much faster than the above-mentioned Huairou policy.