What is the most annoying quirk your spouse or boy/girlfriend has that you hate the most?

I’m getting married in May and I was just thinking about the annoying little habits that I have grown to get used to that my fiance has. (One I have never gotten over was the toe-nail clippings left on the couch once! But he has since been cured of this) What is an annoying habit that you have come to over look or simply cannot get over your spouse or significant other does?