I think there are a lot of people who don't understand that think being bipolar means short bursts of mania then short bouts of depression. No, it's more like a roller coaster with long, sweeping hills that take months or even years to get up or down and, have plateaus of varrying lengths at the tops and bottoms, and sometimes in the middle of those hills.
Most of the time we are nether 100% up or 100% down but, we are tending to be more one than the other 99% of the time - those level middle spots are few and far between. At our lowest we have no energy, no interest in anything and pretty well stumble along in a fog bank, some even contemplate or attempt suicide then, maybe for months or years on end. At our highest we can get pretty out there, spending sprees, even if we don't have the money, playing the daredevil, totally cleaning and revamping our homes, not sleeping much life of the party only the party lasts months or years. Sometimes we hi steep hills and can go for highest to lowest in the space of a day or two.
it isn't like when a "normal" person is upset because a loved one died, that has a logical reason for them to be down. We need no reason, life can be perfect, we can have everything and everyone we need or want in our lives and, our brains still send us into a depression, for no reason. Same for mania, everything could be terrible and wrong and yet, we can be feeling beyond on top of the world.
Learning to manage those feelings and, not allow them to dictate our actions and words is a life long struggle. it isn't easy and, we can't "just get over it." We don't choose to be depressed or manic, we have no control over that, happens no matter what else is going on in our lives and, no matter what we do. Were we win is when we learn to put both ends and the middle to productive and/or self healing use. A few I know, my self included, have chosen to learn to do so without medication or therapy - a lot of self education, trial and error and, inventing coping strategies that work for us even if no one else thinks they will work. Some need a bit of help form meds and/or therapy and, there should be no shame in either, it's a personal choice and, finding what works for each individual.
If Jonny is indeed bipolar, I respect whatever choice he makes and, only hope that he finds his own way to be okay.