If you see a girl with a pretty face that is fat why not go for her anyway as weight is changeable. Weight loss is based on lifestyle so why not positively impact her lifestyle so she loses weight? Small changes make a big difference like going for walks or getting sushi instead of McDonalds. Some women hate the gym but love a long walk on the beach. So there's always good healthy options. Sure if you can get loose skin and stretch marks from weight changes but these are often looked at as scars from how far you have come. Plus a new relationship can give you the dopamine hit you need instead of using food to feel good. And positive reinforcement and encouraging love for her body will make her appreciate it more and fuel it in healthier ways.