I'm bipolar and I've dealt w that a lot. It hurts like hell. I have mixed episodes when I experience high and lows at the same time. It's like being tipped apart I totally understand. It just pops up you could be having the best day and BAM all of sudden your mood just starts swing. I take meds that help regulate my moods (lamactil and lexapro) and that's really the only thing that helped. It sucks when you're in a relationship it's just so hard to explain and for ppl to understand. I hope you feel better. Pm me anytime I have a lot experience. My girlfriend really tries to understand but I've been w others who just didn't care or try to get it.