I agree with gcp, if your relationship is heading towards marriage then you should be able to compromise. I see you're going for SLP. My (very limited) knowledge of SLP programs from a couple of friends currently attending is that many people choose programs within the area they want to work after graduation. I suppose you'll make connections in grad school that will make it easier to get a job within that region. If this is the case, you and your boyfriend would be committing to a new city for longer than just 2 years. Have you thought about what you will be doing after graduation in terms of relocating or staying?
As I said, I am far from an expert on SLP programs so I am not quite sure how drastically a higher ranked program would improve your job opportunities. You mentioned you applied to several schools, are there any other programs you would consider? Choosing the right grad school isn't all about ranking-- if your quality of life will be miserable while you're in the top ranked school, I personally don't think it would be worth it.