It's great that you've kept the weight off. Do you see a therapist to help deal with some of the issues that caused you to be overweight?
I haven't had gastric bypass, but have been morbidly obese most of my life. I have always had an unhealthy relationship to food (compulsive over-eater, binging/purging, repeated dieting). In fact, it's one of the specific things I'm working on currently with my therapist. I'm not sure whether food addiction is an eating disorder. Part of me wants to say yes, because it can consume so much of your thoughts and control so much of your behavior. I think people can experience the sense of losing control/hopelessness as they do with an addiction. On the other hand, when I think of addiction, I think of something that is not necessary, and food is necessary to live.