Need to clarify something. If you are staying as a long term house ‘guest’ in someones house, is it not polite to keep with the families happy, bubbly persona rather than be moody for no reason and make the entire household walk on eggshells?? You’re an adult! I understand an off day but when my family are scared to come home in case you are in one of your moods, something is wrong!! Go to your room and stay there if you have nothing nice to say. Don’t try to bring the mood of the house down with your grumpy ways! You have now out stayed your welcome, family or not!!