Hi I'm terribly sorry if this is an insensitive thing to ask since I'm not officially diagnosed (I suspect I do have bpd and am going through the process of trying to assess but it takes a while)
And. Also sorry if I flaired this wrong I'm new here and just came searching for advice or understanding or. Something

My closest friend/younger sister figure (and possible fp, for context) just told me about seeking another partner and I just got so immediately slammed with panic and anxiety and fear that she'd forget about me/have less time for me/ditch me/etc and I started crying and had to leave and it was. Bad

And yet now, like 20something minutes later, I feel perfectly fine and neutral and just. Mad at myself for making such a big deal out of nothing

I know my reaction isn't healthy at all but since I'm not even fully sure if I have bpd I guess I'm just making this post to ask, how do y'all deal with it? The unfounded fear with close relationships and the intense short emotions