They may to rethink that for their own health.
Consider this from The New York Times columnist Charles M. Blow:
More specifically, blacks overwhelmingly say that homosexuality isn’t morally acceptable. So many black men hide their sexual orientations and engage in risky behavior. This has resulted in large part in black women’s becoming the fastest-growing group of people with H.I.V. In a 2003 study of H.I.V.-infected people, 34 percent of infected black men said they had sex with both men and women, while only 6 percent of infected black women thought their partners were bisexual. Tragic. (In contrast, only 13 percent of the white men in the study said they had sex with both men and women, while 14 percent of the white women said that they knew their partners were bisexual.)