aw *hugs* designunique.
i'm new to posting, but i have been 'lurking' for a while now. your post really touched me, only because i was recently diagnosed with BP-2 as well and the thought of that scared me to death. i was devastated to think that this isn't something to grow out of, and that i will have to proactively manage my disorder for the rest of my life.
i am always scared about what kind of mother/partner/daughter/sister/friend i will be when i am cycling through an episode and there have been a few things that have helped me to explain my situation to my friends.
the most important i am learning is not to stigmatize myself. lets face it, when you say that you suffer from bi-polar disorder, people most likely assume straight jackets, electroshock therapy and jekyl/hyde behaviour.

i refuse to accept the fact that i am 'crazy' or not 'normal'. i am me, plain and simple.
i think education is the most important way to help people understand. the easiest way i've been able to describe it has been to compare it to something such as diabetes. the pancreas doesn't produce insulin, therefore people take insulin shots to help regulate their blood sugar. my brain produce chemicals properly or consistently, therefore i take meds to help regulate the chemical balance in my brain.
the people who really care about you will seek to understand and will want to learn how to support you. be honest with those close to you, let them know when you aren't "quite right" and that it has nothing to do with them.
i consider myself lucky to have the support that i have, and i hope that you find people in your life, who you can trust and open up to as well
one other thing i love, is a dr seuss quote
' be who you are and say what you feel because the people who mind don't matter and the people who matter don't mind '