Anyone else’s partner constantly ask “are you okay”?

Dont know if necessary but I'm 22/F and he's 23/M

So one thing that confuses me the most about his BPD is how often he'd ask me if I'm okay. Like he'd hang out and all of a sudden "are you okay?". I say I'm fine and then it just cycles.

"Did i do something wrong?" "Why are you mad at me?" "Why are you so pissed?" "What did I do to you?" "I didn't do anything, what's your problem all of a sudden?"

And most of the times, there's literally nothing wrong with me. I'm happy but it's like he creates this problem out of thin air.