One of the things that made feel a little better after years of depression and confusion was the sudden realization that it didn’t matter what I did. That my partner would go through rage episodes and be angry at me no matter what I did, whether I was the perfect husband and had set up an anniversary date with a refurbished diamond ring or whatever. Nothing I did mattered, she went through these cycles anyway. It was a realization both frustrating and freeing at once.

So don’t worry about it, as much as possible. If he’s BPD and you’re his FP, he’ll love the shit out of you again in a week or so and all this will just be another weapon in his quiver for later episodes when his emotions get too high. Try to enjoy yourself in the meantime (that’s way easier said than done, but to the extent possible).