I've had an eating disorder for 7 years, and I have to urge you to try and find alternative methods to dealing with your feelings. Because if this is a coping mechanism all that will result from this is you feeling worse. Living with an ED has made my life hell and I would love to just go back to when I didn't hate myself. But once it's developped it's too late for that. Please, don't wait for it to be too late for you, I would hate for you to go through all the horrible things ED's make you do and feel.
Take care of yourself, both of you <3