As one of four daughters (late) alcoholic father and a mother who put up with him for God Know Why for 23 years I can only tell you that staying together to "keep the family together" is not what happens.  I am 59 years old and still live with the awful memories of a tension-filled home life with a home full of unhappy people.  (my sisters and I then and now refer to it as 7 Rooms of Gloom). Please consider either seeing a counselor for both of you or for YOURSELF to resolve this.  Or, depending on your financial staus, trips to local Al-Anon meetings (family members of alcoholics), may help you deal with this and come to a resolution.  Best of luck.