Although you have a good relationship with your girlfriend it is very delicate to tell her that she needs to reduce weight. This is an embarrassing question to ask anyone and we do not know how the person will react to it. If your girlfriend takes it positively then there is no harm but if she is offended your relationship might be affected for sometime or forever based on how it has affected her. However, there are a few tricks you can practice to get your girlfriend to lose weight. Gaining a small amount should not bother you but if she has gained more than 10 lbs it is time that you indicate it nicely to her.
When you tell your girlfriend you must convey it in a way that you are really concerned about her health. Do not let your speech be artificial enabling her to sense it quickly. Giving a lecture and discussing techniques of losing weight in detail will not appeal to her so make it casual. Also look for a good location where you will not find any interruptions. When you feel that your girlfriend is taking it positively you can change your conversation to a serious mode. You can refer weight loss programs like Nutrisystem that have helped adults to lose weight in a healthy manner. You can tell her that the company provides diet plant in the first month which helps you to jumpstart your journey and lose up to 13 lbs and 7 inches in the first week. You can indicate it to her that it is great amount of weight to lose it in a shortest period of time. You may visit skycube.org site to know more about Nutrisystem and its diet plans.
The best way to motivate your girlfriend to lose weight is by participating in her weight loss efforts like exercising and diet. Possibly fill your plate with diet foods that your girlfriend has to eat and not your favorites.