It might be better to give that person some time... forgetting it ever happened will def. seem like you did it on purpose. I've done something similar and in the end you just have to wait it out... i had to make up for it and try to be extra nice (but that can bit you in the butt too... it might seem like you are being fake). What exactly did you do and what have you been fighting with this person about. It might help to get a little bit more background info. You obviously dont have too i am a stranger but i can give good advice. ^^