I used to overeat/binge all the time. I hated myself and the sick cycle of overeating, then feeling shame and guilt, caused me to repeat the cycle all over again. I went into therapy and began to address my childhood issues that caused me to feel inadequate and worthless.

From reading your post, I am going to venture a guess and say you dont feel very good about yourself. You have let yourself go, dont pay attention to hygeine, and avoid doing the things you know could improve your relationship. You know, if you feel like crap about yourself, your husband will pick up on this and could be the cause of the low sex drive.

His low sex drive could also be hormonal, stress related or maybe he feels you dont desire him. Have you approached him and asked about what you both could do to put the spark back into your marriage? I hope you find some resolution.