I think your friends are being considerate of you. Perhaps there is a bit of ageism there but I will tell you, as a psycotherapist specializing in eating disorders, I wouldn't mention a person's weight loss but wait to hear about it from them. It is a very personal thing whether it is a good or bad change. Many people with eating disorders are triggered in different ways by your comment on their weight,. It can be very hurtful or difficult for people. Now that I know you are proud of your weight loss, let me say, congratulations on accomplishing your goal.