Life seems to be a series of fights large and small. It's right out front sometimes like with the "battle of the bulge" and the more general response to how are you "fighting the good fight". Relationships are no different even though we act like it should be effortless. Nothing worth doing is easy, but sometimes it would be nice if that was the case.
When you change your lifestyle and eating habits drastically there are other side effects besides weight loss. Unfortunately, this can take some time to get used to for the people around you. I feel like emotions are closer to the surface and fuses are shorter. When you preoccupy yourself with food it's easy to let other things pass you by, but when that buffer is taken away you may be left not knowing how to handle those feelings in a calm way. Not that people without eating disorders have their emotional shit together, it's just that now you have a person whose personality has shifted rather suddenly and it's a little unnerving. I often read articles in my lady magazines about people feeling like their friends are having trouble getting used to the new them because they want to change the habits that put the weight on. I think it's possible that the emotional changes are hard for them to deal with, and more importantly it's confusing to the person changing their life for the better. Except depriving yourself of the food and drinks you want and having to work out all the other shit is supposed to be good! All I know is it's not what I anticipated.