Could my anorexia be from a broken heart?

yeah becoming anorexic has a lot to do with emotions/depressions and feeling good about yourself. try to deal with the breakup, instead of damaging your health to fix the problem (loosing weight the unhealthy weigh is definitely not going to fix anything. the only thing it will do is cause more problems: anorexics tend to loose hair, get brittle nails, nutritional deficiencies, get acne, etc...). make sure you're taking a multivitamin daily and maybe getting iron infusions twice a year and B12 injections once a month to get enough nutrients. malnutrition really destroys a person!!!! - i've seen it happen, it's sad. take care of your body now, before it's too late. PS: vitamin B12 and iron help against stress/depression/anxiety!