Being bisexual might limit who is willing to be with you, as well as your physical sex anatomy, your gender identity, and all the other factors.
Attraction in a relationship is a limiting thing. It entails not only whom you are attracted to, but who your potential partner is attracted to.
And I think there are many factors included that make up an attraction. Appearance, physical features, behavior, personality, intelligence, culture, anatomy, social spheres, hobbies and interests, allure, and chemistry. I think from what I have experienced psychological gender, gender roles, gender behavior, and even physical sex genitalia can influence your potential partner. Even one's own orientation can affect it.
So I can see how being bisexual can limit how many choices you have. I know everything about myself and my potential partner limits how attractive and compatible we are. And add in one's identity and how one feels about oneself and it can complicate things more.
Ken/Kendra/KK