Healthy men are attracted to healthy women. That doesn't mean you have to be a certain shape to be healthy (IMHO). It means that you have struck a reasonable balance between enjoying your life today and taking care of your health for tomorrow. If you're getting regular exercise (like an average of 30 min or more a day) and you watch what you eat while giving your self allowances for enjoyment, let it go. Really, only you can know what that is. If you feel guilty about some behavior you're engaging in, then deal with it.

That's what healthy people do. If you're doing that then you're the shape your supposed to be and someone will love you for who you are. There are plenty of round people in loving relationships. There are plenty of round people that will smoke you on a bike.