I have been living a diagnosed mental illness for 25 years. So, I don't know how it feels to be "normal" and have a bipolar significant other.
But I do know, that even when I am complaining or asking for more support, it doesn't mean I don't appreciate what I have or love my significant any less.
I also know that I can be a little manipulative and tend to bait the ones who love me. Sometimes, I need a limit or boundary set. If it is done very thoughtfully, gently and if my imput is considered in making that limit, it can be a very good thing for both of us.
I hope that is helpful.