Monobisexuality
Also called Monosexual Bisexuality.
If a person identifies as both male and female and are attracted solely to either male or female people, they are both attracted to the same and opposite gender which makes them bisexual but they are only attracted to one gender which makes them monosexual. The romantic equivalent is monobiromance or monoromantic biromance.
If a person identifies as both male and female and are attracted solely to either male or female people, they are both attracted to the same and opposite gender which makes them bisexual but they are only attracted to one gender which makes them monosexual. The romantic equivalent is monobiromance or monoromantic biromance.
Even if lesbians were always women who are exclusively attracted to other women and nonbinary people who identified as women didn't exist, bi lesbians would still exist due to monobisexuality.