I guess I didn't explain this well...

I did not mean normal emotionality, this is somehow nonfunctional.

I guess the psychological condition closest to this that I heard of is extremely rapid cycling bipolar, but that to me seems kind of a bullsh*it notion. It would be closest simply because it's emotional and has various emotions.

And the other thing closest to it is borderline PD but like I said this isn't a PD.