I'm not anorexic (bmi 19) but i hate eating when i'm on my own.
I was overweight as a child, I was teased because of it by everyone (yes, everyone including my parents) I grew out of being overweight and was a "normal but slightly chubby" size 10-12 (6-8 US and was about 130lbs I'm 5'3")
I suffered some depression a few years ago and stopped eating. I lost a lot of weight. I went to a size 8 (4 US). That was 6 years ago and I STILL hate eating.
I'm a size 4-6 now (0-2 and about 112lbs) and I still think I'm fat and eating is such a chore.
I only eat in front of others, like when I'm around people (like work and family/fiancé) I eat normally (although only salad and grilled chicken)
When I'm alone I like to see how long I can go without food for. If I feel hungry I just drink a big cup of black coffee. It gets to the point where I feel sick because I am so hungry.