hi empathy72, and

it is hard to sum up a seven year relationship, but you gave us a pretty good picture; you seem to have a pretty good knowledge as it comes to the obstacles BPD can present, and im glad you reached out and are seeking support here. im confident many members here can relate to your story.
are these false hopes or expectations?
a therapeutic separation from a tumultuous situation can be healthy for both parties and the relationship, yes. a lot of the tools on the Saving board involve not making matters worse, getting out of enmeshing and dysfunctional dynamics with boundaries, learning about the disorder, self improvement, and often times giving each other space. it sounds like these things are on your agenda, and thats likely to give your relationship its best chance.
it sounds like the two of you are on similar pages - would you characterize the separation as a mutual agreement? is seeing a therapist on your agenda?