It's really hard and complex to deal with disordered eating resulting from psychological issues when you throw in a GI illness on top of it. I've suffered with disordered eating patterns for years, since adolescence. Having a GI problem just makes it all the more distressing because now there's two food-related issues to contend with: the mind and the stomach. And sometimes you just can't separate them. And sometimes you wonder how much they are related: do the stomach issues cause the disordered eating, or did the disordered eating cause the stomach issues? And there is no good answer for that in most cases. Not everyone with an eating disorder will develop Crohn's, and not everyone with Crohn's has an eating disorder, so making a correlation is difficult.
If you think about it, your "relationship" to food starts at the beginning of your life and your eating habits are set into motion at a very young age. So if you start off with a jacked-up view of eating (due to parental influences, media influences, whatever), you're already going down a freaky path. Then all of a sudden the food you DO eat starts causing diarrhea, abdominal pain, etc. and you find out you have Crohn's and wham, you have to be super-vigilant about your food. But you already were before! The horror! It really is terrible.
Even people with "good" eating habits will undoubtedly be frustrated by the limitations that come with chronic GI distress. I'm sure everyone has their "whatever" moments and eats something they either unconsciously or consciously know may cause GI distress, just because it's an act of rebellion and control during a time that it seems we have very little control.
I could go on and on about all this...but my point is that you're not alone, and it would probably be a good idea to seek counseling, or start writing down your thoughts in a journal, and tell your GI and other docs what you are experiencing. Hang in there and let us know how you're doing.