Hello, first of all I'd like to say that I am not diagnosed, but I strongly believe I have BPD. We were long distance for a year, and we just moved in together about a week ago. 

During long distance I had all the typical symptoms. I cried every night he said goodnight because I wanted to talk more, I "split" on him literally daily over minor things. (I rarely ever took it out on him, I kept the splitting in my head). He is what I assume to be my FP, I think about him nonstop, daily, 24/7 for every single day that I've known him. Like not a minute has passed in the last year and a half where he isn't on my mind. Quite literally. I self harm, have low self esteem, I used to have horrible mood swings before this week. Threaten suicide like weekly, all of that. Anyway I believed I had BPD even before I met him. 

But suddenly since we've moved in, I have felt 0 symptoms this week, except for the first night we spent together. He was tired and it made me sad he wasn't as "excited" as I was. Anyway, It's the longest I've ever been symptomless in atleast 4 years. We're spending 24/7 together because he is on his school break and neither of us have a job. So maybe when he goes back to school symptoms will return. Has anyone else experienced this?