My friends are concerned that I'm developing an ED is it really true? I don't want to change my eating habits.?

You really do need to be careful. It seems like you are going down a dangerous path. One of my friends is having a similar situation. The best advice I can give you is don't starve yourself. Please. It's not worth it. Ultimately your metabolism will be worse than it is now, and it will be even easier to put on weight, though I doubt that's what you want to hear... I have a challenge for you. For one day. Try to see if you can eat a "normal diet" (at least 3 meals) and don't exercise for 24 hours. See if that helps at all. Good luck and please don't get sucked into this weight loss track. It's dangerous. <3