Without specifics it's hard to say much.

Just be sure you don't blame bipolar ex machina for everything that goes wrong in the relationship. SOmetimes relationships break up because two are not compatible and one does not say "it was her normal's fault".

Sometimes you need to talk and comminicate and not blame everything on bipolar. And bipolar people have faults too and sometimes things are their fault. Bipolars are humans with all it entails.