Before I was dx'd and medicated, I think it was the manic phases that made me totally forget about my bf, and over time start a relationship with a female colleague. Generally I'd call myself straight, but at the time I was definitely bi. Left my 2 year relationship behind, had a 6 month relationship with a woman, when that ended, I crashed and went off to hospital and started being medicated.
Other than that, I am only hypomanic at times and get by with a lot less sleep than normal
Not quite as exciting as you all!