I 21F don’t know what I should do about my bf 24M. What is some advice you can give me?

I 21F and my BF 24M have been dating for a little over a year now. We have lived together for about 7 months, throughout this time we’ve gotten to know each other a lot better. He’s my best friend and I can’t imagine my life without him. But I’ve had this nagging issue in our relationship for a while now, my boyfriend wants to move across the country, and I don’t. He wants this for his career. Which I understand, where he wants to move has more opportunities for him. This is constantly brought up, once he’s done with school, he’s moving. I am not set to be done with school until well after him, but he has no intention of waiting for me. I have expressed to him I do not want to move, but at the same time I am very hurt by this. In our most recent conversation about this, I expressed to him my clear wants for the next 5-10 years of my life. When I did he told me that he wants to marry me and have children with me. All of this, but our lives just are not lining up. I don’t know what to do. I love him very much, but I can help but feel like I’m going to find myself 5 years from now telling myself I told you so.