My two cents is that Dear Old Dad has an incest skeleton in his past - perhaps a parent or close relative raped him and he never said anything. Regardless, you have the right to not go along with his advances - because that's what they are. He's hitting on you. No matter how controlling he is, no matter how scary he may be, you've got the law and the moral sensibility of 99% of the people in the world on YOUR side. If your mother does nothing, she is passively condoning his actions. You may have to bring in Family Services, the police, a therapist. If you have a "school therapist," discuss it with that person. I can understand not wanting to go public, but you may have to. In the meantime, see if you can learn some self-defense skills, karate or the like. If you feel really frightened, by a can of MACE (pepper oil spray) and use it if he gets out of hand. One of the things that evil parents do is to tell their kids to NEVER hit them (the parents) and to ALWAYS OBEY THEM, which is a total crock. He has made it so that it has to be HIS way - but it's really UP TO YOU.