What I have experienced on the receiving end is whiplash. Up/down. Severely so. Out of the blue hate comes through big and strong. Wait long enough and then undying love appears. It is very hard to deal with. I imagine it must be exhausting for the bi-polar person.
So are some folks slightly bi-polar while others are SEVERELY afflicted? Everyone I expect experiences mood swings from time to time. Bi-polar folks get so high and then crash so low it's like a yo-yo. Just wondering.