For many people, yes - during hypomanic or manic phases. Probably not most of the time, which is spent either depressed or normal.

Love can be a funny thing.
During the early years of my marriage, I was having BP episodes (undiagnosed then) and my wife who loved me felt incredibly threatened. We got into fights and it felt as if she was trying unrelentingly to rip me to pieces. Neither of us understood what was going on for many years.

But she stood by me for 26 years and weathered the storms.
Now that we have a diagnosis, and are able to work with knowledge and the benefit of medicine, she is my best ally. That to me is love.

When you are starting out with a romantic relationship, if you already have the "best friend" bit in place, you stand a good chance with the rest.

My 2c.