Hi randomuser94
We're here to provide support and improve the quality of a relationship where one partner exhibits pwBPD traits.

It's for the 2nd time in 2 years ... .
That's a pretty good relative track record to where one SO in a relationship will suggest a break-up 20–40 times a year. 3 times a day for some. So relative to that, that's not so much. If you want some change in the way your partner does things--then that's still okay.
Re: Is there a way to avoid or fix the cycle?
I think isilme is on a good track here:
Yes and no. Yes, you can break parts of the cycle to which you contribute, but you can't directly change the pwBPD or how they behave.
is there a way to control this?
"Fix" implies broken, and so perhaps you can narrow this thing down. What exactly do you want to avoid or change? If you want her to not feel engulfed, then she herself would probably have the answer for you:
asks me for 'some space' which translates to I need a break-up.
It might help to ask why she asks you for space. The answer there would probably help with seeing if you can get what you want.
asks me for 'some space' which translates to I need a break-up.
I don't know the background to your relationship randomuser94, and giving someone space doesn't automatically mean terminating an intimate relationship.
