Hi TravisNYC,
21 days is a long time and then it is not a long time. 2 years is a long time and then not a long time. Breakup and makeup is normal but then too much of it is not normal. Should you continue - who knows? Do you want here back? Are you open to deal with an instable person close up? Where are you in life and where do you want to go?
You seem to have a healthy sense of what you do and what you don't do. Boundaries i.e. rules for ourselves are vital in dealing with pwBPD as we are faced with extremes that are tempting or pushing us out of a healthy an sustainable path. Respect is key in relationships with pwBPD and some distance makes it easier to maintain that. Right now you have some distance and until you have educated yourself (LESSONS post and workshops mentioned there on boundaries and validation) I would strongly suggest to keep her at arms length. It is easier to maintain boundaries than to introduce them later. Right now she wants but you are not committed.
,
a0