I agree with what Claire said. You need to get it across with your parents. This is not going to work out if you are feeling like this day in and day out. Its going to get worse through the years. They've known you for all your life, how long do they know him? He SHOULD NOT be placed above you. My mom likes my husband but when I got married she told me that if for some reason if things dont work out, or if we get in a huge fight, she will always open her doors for me, and if I have no place to go she is willing to support me and my kids. I am sure your mom is a great mother, but really, thats what all moms should do, defend their own daughters, not their son in laws, especially if he has a problem.
I am starting to feel bitter for you, you need support at least from someone. You're way too young to be this miserable.