Your father has been having an affair with your stepmother since your mother got sick. When your mom passed, he did not grieve, he brought your stepmother into the house, and remarried a month after your mother died. Of course this left a lot of hostility, your stepmother does not like you, and you do not like her, but your father sides with his new wife everytime. Thus leading to the relationship he has with you, to be destroyed. He hits you for the first time, and it won't be the last time..