Bisexuals can be perfectly happy in a monogynous relationship. Bisexuals are promiscuous. I, for one, am not promiscuous. And I know lots of other bisexuals who are not promiscuous. Some bi people may be promiscuous, but so are some gay and straight people.
Promiscuity depends on the individual.
That's all I have to say on this subject for now. You can check out these web sites if you have any questions. Thanx for listening.