really scared to lose my boyfriend

i am 16, and so is my boyfriend, we go to the same high school and we have been dating for over a year now. hes my best friend, we spend a lot of time together and hes the only person in my life that makes me genuinely happy just to be around. but a few months ago, i woke up to messages and calls saying he was at the hospital. he was on his way to a soccer tryout and had a seizure. they had to take him to the hospital by ambulance and he was there all day. they went through tests and stuff to make sure nothing was seriously wrong and then let him go. but a couple weeks ago he had another seizure at home. he didnt need to go to the hospital this time, but his mom took him to the doctors where they diagnosed him with epilepsy. he takes medicine every day to help prevent seizures, but sometimes he feels like he has them, just shortened and not as severe. his arm or leg will go numb and he spaces out for a minute or two. it just scares me so much because not only do people die from severe seizures, but he could be doing something and have a seizure and get seriously hurt or die. like driving or working on the farm as he does a lot in the summer and on weekends. i just get so scared that something could happen at the wrong time and i could lose him. it would tear me apart, he means so much to me, hes my whole world. i had a dream last night that he had a seizure and got into a car accident and i woke up crying and shaking. it just scared the living shit out of me and i try not to let it but i cant help it. i just love him so much.