I hope it is not. But as you grow older you will discover that we chose our partners often to fill some need within ourselves. Be cautious that it is not a destructive need. I think sometimes that it is impossible for someone who hasn't suffered mental illness to empathize with those who do. However, there are many, many people who accept the illness even though they don't understand what it's like.
Communication is key.
DON'T feel guilty about talking to your boyfriend about your illness. Try telling him what you are thinking, what you are feeling. That is sometimes the hardest thing to do, I know. If he doesn't want to hear about it, well, I hate to say it, but he probably isn't the guy for you. But don't fear, there is someone.