Sorry, that was for goodas. Carrie please stay, it's not all about whether you binge or purge it's about healing your relationship with food and your body. Emotions play a huge part in it all but so does biology, when I talk about choosing the good things for your health it's about eating in a positive way, by doing this you can more easily separate genuine physical hunger from the emotions, which you can then start to look at.
You are probably thinking 'well if I add more food to my day then I'm going to gain weight, but think of feeding a fire...you can put great quality fuel (say, wood)on there and it gets used up gradually, leaves a bit of ash. Put spindly twigs and paper they get burned up quickly and leave ash. Put bits of plastic on there they melt and lie in the bottom of the fireplace making a mess. In the same way, all calories aren't equal. Good protein and fat is the wood, decent carbs the twigs, heavily processed and artificial food is the plastic, too much stuff your body has no use for and struggles to metabolise. Good quality calories will be more efficiently used by your body, added on to the not so great ones you might go through a period of weight gain but you will also feel much healthier and if you start eating mindfully and listening to your hunger signals, they won't be clamouring the same way and you will naturally eat less of the empty calories.
If you feel you are relying too much on the sugar etc in the evening, can you think of other comforting things you can do as an alternative? Call a friend, do your nails, take a bath, go for a walk...