Strong cycles back and forth, strong highs and lows. I have met someone like this. I wouldn't want to be her. She's a lovely person, but it's overwhelming. When she loves she LOVES, when she fears, she FEARS, well, you get the idea. All of the above happens on about a 45 day cycle from high to low. She's also paranoid.... It is exhausting for her, and it's pretty exhausting to witness as well