I can somewhat relate to what you are going through on 2 levels because for one I have suffered with severe migraines since I was a baby and my mother took me to the doctor because I would hit my head and cry in pain and I also have a father that suffered my whole life with debilitating migraines and missed almost every major function I had due to a headache. I have what the doctors have coined "classic" hereditary migraine headaches I get them from the weather, foods, and other factors in my life. Over the years I do not have an aura but I can go blind in an eye and the naseua is unbearable I have broken my toe because of a headache and almost broke my nose because of a headache I have spent more days and nights than I care to remember locked in a dark room with strings tied around my head and ice packs / heat packs and whatever else I can think of to get rid of the headache. I cant take imitrex because it causes me to have heart attack symtoms. I have been to more neurologists than I care to think about and I have found that for the most part they have not helped me. I have been to 2 major headche clinics in 2 different countries and when I say I have tried it all I have tried it all homeopathic medicine, over the counter, prescriptions,chiropractors, massages, meditation I have read literature browsed the web up and down. My husband and children suffer with these headaches as well my daughter saw me relaxing at a pool one day and because I was laying down she came over stroked my head (at 2yrs old) and said poor mommy has hegage (thats how she called it) and wanted to get me ice. I thought I was going to cry.
I would suggest that he see a doctor it is very important to contain migraines with a doctors help and they can be controlled in many cases. I myself discovered about 3 or 4 years ago Topamax and I have been taking it ever since the reduction I have seen in my migraines is huge I have a life again and I would not give it up. I did this in a partnership with my doctor I have regular checkups and blood work but it is so worth it. I still get migraines but not as bad and many times they are contained rather quickly. I am not saying that what I take is for your boyfriend but most the most important thing is to get your doctor involved and it is a partnership to work out a strategic plan on how to contain the pain and not just "live with it" also be careful of the over the counter meds because taking too much can cause other health problems which a doctor would also advise.
I hope this helps a bit.