You are only 20? Seriously? You have the whole world in front of you and you can do anything and have anything you want out of it. Why are you wasting yourself this way? Git away and start over. Going back to school might be a good idea and concentrate on you, and what YOU want out of life for a change. If you dont, you have only yourself to blame.
I agree that the porn is the least of your problems. Run, dont walk, outta this situation!
Everything about this relationship is telling you to run, and the porn isn't even a priority. In fact, the porn is the most christian thing going on.... None of your description sounds good.
Have you spoken to a therapist concerning the rape issue? Seeing one would be a good start, and then work on your self worth. You have to realize that you are better than the way he is treating you. You have to realize you deserve to be treated far, far, better than he is capable of. This relationship is about you.... who cares what other people think. This concerns YOU! YOU should have a say in your relationship.
Lets recap... did I read this right? "his aunt is dating the man who raped me as a child"? Ok, so right there, you need to get out of this situation and as far away from him and his crazy relatives as soon as possible. Trust me it is only going to get more complicated and worse as years go on. I don't know if it is coincidence or you are in a small town but this guys is wrong for you on a totally different level. He should support you and believe you in the rape incident. you say "my boyfriend's family decided to ignore me and is now against me" Oh hun you do not have to put up with this in your life. You are so young. He sounds young too and I would say you could do better. It sounds like you have a bit of a standard when it comes to porn so do not lower it just to keep companionship. I don't know if you have ever gone to the authorities for the rape scenario but I believe you still could report it if you wanted to. just sayn. Been down that road. He has had a problem with porn for a while looks like and you should not have to compare yourself to these porn stars. I am very sorry you had to get an STD from him. Most men have issues with porn. I mean a lot of men. more then we women realize. Matter o fact it is not just men anymore. Some women struggle with it too. So be glad he admitted to it. give him time to change. but don't baby him and be there for him. admitting is one thing, change is another. try being single for a bit. you may like it. find yourself.
Good luck!
This one's for you hun! http://youtu.be/Urdlvw0SSEc