55.This section defines the protected characteristic of sexual orientation as being a person’s sexual orientation towards:
people of the same sex as him or her (in other words the person is a gay man or a lesbian)
people of the opposite sex from him or her (the person is heterosexual)
people of both sexes (the person is bisexual).
56.It also explains that references to people sharing a sexual orientation mean that they are of the same sexual orientation.