Earlier quoted context omitted.
Has your slow metabolism been confirmed by lab tests? Many people seem to think they have a slow metabolism but very few actually do.
I suppose I don't fit the scientific definition of a slow metabolism. I clock in at around 1800 calories per day, which is within a nominal range. That said, I cannot eat the way the rest of those around me can without gaining huge amounts of weight. I've lost 100lbs and it took a lot of time to figure out that I just can't eat the same as my friends do and maintain a healthy weight.
Most likely you're overestimating how much your friends actually eat. Unless you're monitoring them 24/7 then you don't really know for sure.