I'm in therapy for this same problem. ^^;; I'm in love with my best friend and when he first rejected me, I quit eating. I dropped thirty pounds in a summer. When I kept losing more weight over the school year, he told me I had to tell my parents... Now, six months into therapy and about to graduate from it, I still have eating problems. Therapy's helped a lot, but I don't have the same relationship with food, and it's hard to even begin to like eating again.

" To this day, I can't eat the way I used to, and I blame him for it."
Well, kudos for getting better (although I think people on xanga need to be a little better about using trigger warnings), but I hope you realize that this isn't anyone's fault- anorexia is a disease caused by anxiety and by a lot of messages you subconsciously absorb, and to just blame one person who never even implied you should diet, much less starve yourself, is... just misleading yourself.

Unfortunately I have "starved myself for someone," way back when I was in the 8th grade, but it really wasn't his fault, or my fault even, it was something underlying that happened to manifest itself in that particular instant.   I wanted him to like me so bad (pathetic, but hey, I was 13!  It seemed so important at that age), and the problem was that starving yourself becomes everything you do.   I acted more confident, because I felt more pretty when I wasn't eating.   So then he DID start talking to me more, and we became friends, and I would tell myself it was because I was thinner.   And then everyone around me would constantly tell me how thin I was, and that made me feel good and want to eat less/exercise more, so the circumstance began to feed in on itself.   I got over that particular instance because it was eventually the end of the school year, it turned out he didn't like me, and I dealt with that depression by eating way too much, but it took me about 8 years until I was really, completely able to get off the binge/purge cycle that started then.   

But again, it wasn't really about him, it was about my desires to feel wanted, to feel in control of my life, and to feel like other people thought I was beautiful.   It's funny how you can convince yourself you're not absorbing subconscious cues from the world around you, because I remember it had been the first season of ANTM and the thinnest girl on the show- on a show about MODELS- was I think, 3 inches taller than me, and 10 pounds lighter than me, and I was fixated on it.   It made me so upset because to me it was like, "If you were thin and not chubby, you would weigh less than her, not more than her, because she looks normal and is taller than you."   I'm glad they don't tell the models' weight as much, anymore.

I never stopped eating for a guy because of a breakup. Although, I did try to gain weight because back when I was 15 and my crush said he liked girls with rounded faces (I do not have that) or pinchable cheeks (again, I'm slender, lean and high metabolism, these are the things I lacked), I tried to force the weight gain by eating.

Safe to say, age at 15, I was about eating 4 full meals a day and only weighed about 100 lbs soaking wet and a little over 5ft 5. High metabolism does that to you...

Grass is ALWAYS greener on the other side. You can't BLAME for the guy for losing weight, YOU made the choice of not eating, whether from too much crying and dehydration or you lacked the appetite, he didn't make you not eat. I think if anyone ever felt that not taking care of your health is not a big deal because of a breakup, you need to remind yourself that IF YOU don't take care of yourself, no one else will.

my ex got me into drinking.  :/ I stopped eventually, but I don't think I'll ever really be able to feel comfortable drinking again.  same thing... kinda. :(

I can very much relate to this.. when my recent ex cheated on me, trashtalked me to his 2 best friends, deleted then blocked me, returned all my presents for him (from during our relationship), closed all the sites he made for me, deleted all our stuff and found out he lied about many things during the entire course of our half year relationship.. I was ill for a few months. The worst part was the 5 weeks that he disappeared from my life without a proper break-up nor closure and went out with that skank~_~'' I stopped eating, sleeping and studying. Yes I did eat and sleep but it was so little that I turned pale and bony, my marks also suffered. Many of my friends and family helped to lift me up from this and using my own strength, I walked away from this. I haven't gotten over him yet but I'm a lot better than how I was when it first happened. I will never forget how he made me feel, it still upsets me whenever I think back to the way he ended things.

I stopped eating kind of for the same reason as you, because I was really really sad when my ex and I broke up, and just so heartbroken I didn't feel like doing anything. It never got so bad that I lost a significant amount of weight though. But yea I totally get the feeling