Ha , I know it would come to this , her trying to change your plans . But that ' s the best you can do , your plans can be non negotiable . You just make the first step and keep her well informed . If she doesn ' t agree with how things are , you tell her sorry but this is the best I can do because we didn ' t clean the kitchen yesterday and it ' s not fair to let my roommate clean my our dirty dishes . Well if you feel like changing your plans to suit her , you can also explain the situation to roommate and tell him you will make it up with him , but you don ' t have to really . Just tell girlfriend how it looks like from where you stand because that ' s the considerate thing to do and tell her sorry but that ' s the best you can do . If she needs pants must she run around for such a small purchase on the Black Friday madness day and drag you along ? Running through the shops on Black Friday is worth when it comes to heavily discounted expensive items , maybe designer pants or fridges If shopping is so important to her on this day , she can take the day off work and go do her thing alone or with girlfriends . Or she can buy online a few pairs of pants with attractive discounts , try them on at home , then send them back if they don ' t fit