that is an incredibly hurtful thing to do, and im sorry you had to deal with it. at first, i had difficulty eating out with friends for fear of looking silly, but luckily, they were supportive.
the only person who i am having difficulty with is my mother, who insists she follows Atkins as i do, (but seems to follow the plan only every other day). i have to deal weekly with her insisting that i can and should eat this sugar marinated meat, or this ice cream and pizza- that this food is only so many carbs when i KNOW it is more. i can understand your frustration.