Forced Marriage? What the fuck do I do?

Hey <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a>, long ass story short. I am under 17, not saying my age for privacy purposes. However, for four years, my family has been trying to force me with this loaded, filthy rich, guy who is three years older than me. Believe me, I stand my ground, tell them no and stand towards my rebuttle back towards them. I am very mature for my age, I am an only child, my parents are excruciatingly strict and seclude me from almost everything. They do not allow me to have a boyfriend, unless it is this guy. On the other hand, I do have a boyfriend of 8 months who knows what is going on, we have loved each other for 3 years before this. He is 2 years older than me, he cares for me, shows me a passionate, and genuine affectionate love that I would not be able to achieve through any other person. However, they do not like him because he is not my ethnicity, (we are both white). Back to the topic, I would absolutely swear, that it would probably - according to my parents - be completely acceptable for me to become impregnated by this man they want for me. Now let me tell you how it all started... around four years ago, my parents saw their family friends son, and knew he was "right" for me. He has had a girlfriend for currently three to four years now, and is deeply invested in her. My parents are convinced that he will end it with her till this day, because she is not our ethnicity. His family has wanted me for their son ever since I could remember. To our families, it is a perfect "relationship" that none of us would be happy with. I am utterly disgusted by this entire situation. My family has dragged me to their establishments a multitude of times to meet the family and him. My parents constantly try to drill this man in my head, I refuse, I stand my ground, tell them no. Every. Day. They want to send me to our country on vacation with their family this year, however, my parents would arrive later in the trip to see me and return home with them. My parents always talk about how much he "seems" to like me, and to enjoy my presence. In which, he then again, has a girlfriend, and does not like me. My family is blinded by the amount of money they are worth, how much he would be able to lavish me, etc. Their family has a reputation of arranged marriages, and everything. I have tried to elaborate over an abundant amount of times that I do not wish to be with him, and for them to force marriage upon me - yes I have SAT DOWN with them and had plenty serious conversations, however my always turn into arguments, but I am able to remain calm, cool, and collected as they continue to scream at me. It makes me infuriated how my parents do not accept who truly loves me, my boyfriend. They have found out we were both dating, and my father came inside of a diner we were at and screamed and cussed at my boyfriend infront of the entire diner to never see me again, nor speak to me again. They absolutely hate him with a flaming passion, I have sat them down and spoken with them about him, they will not budge a bit and have not. Yes, my boyfriend and I are completely legal, I have spoken to the police about dating laws in my state, we are very safe in the law book. However, I am stuck, I have no clue what to do, I have spoken to counselors, my aunts, friends, and nothing. No one can give me clear, concise advice on how I should possibly advance in this situation. There really is not much I can do. I need your advice. I am not old enough to attain legal "adult" rights, nor do I have any "evidence" of them trying to force this on me. Help, what do I do? Advice, comments, anything, please. I have tried everything. I could go on about much more details upon this, but I simply do not have the time, and I choose not to disclose the full story for privacy reasons. Thank you.