Some advice please

I met my boyfriend when I was an exchange student in the United States and we spent that year together. I came back to my country and it's been a long distance relationship ever since, it'll be three years in September. Contrary to how I feared it would turn out, it's been going really good and I know I want to spend the rest of my life with him. The problem is my parents. I'm 23 but I'm practically still treated as their baby. I want to go back to my boyfriend next year and stay with him, just get to be with him, and then when we're sure we want to move to the next step, probably get married. My parents won't have it that way though. They have emphatically stated that they won't let me go back if he doesn't come and marry me here first (they are very religious and stuck on "doing things the right way"). So it's basically get married or you don't get to be together. I don't want him to be forced to make that decision, and I'm not ready to be married yet. I feel like the only choice I have left is to run off to him, but that would break my parents hearts, they don't deserve that. I don't know what to do. Any thoughts?