Very much a BPD thing. I remember flying into rages because friends took too long to respond to my texts! When in conversation even the slightest jab would unsettle me for hours. The underlying belief is that people do these things intentionally to hurt you.

I wish I could offer a quick-fix solution. It's taken me a while to build up the confidence to accept that people often say and do things without the intent to purposefully hurt me, and to let go of perceived slights. You're also not responsible for other people's moods. Very much another BPD trait.