He's bare lying. The likelyhood of a mixed-race person marrying Black is, as can be expected, split almost down the middle.
"As a group,
mixed-race adults are much more likely than all married adults to have a spouse or partner who is also multiracial, the survey finds. Among all mixed-race adults who are married or living with a partner, about one-in-eight (12%) say their spouse or partner is two or more races. By comparison, only 2% of adults among the general public who are married or living with a partner say the same.
The survey also finds that multiracial adults with a white background are significantly less likely than single-race whites to have a white partner (67% vs. 92%).
Multiracial adults with a black background are also less likely than single-race blacks to have a spouse or partner who is black only (54% vs. 86%).10
A similar pattern emerges when the focus turns to the friendships formed by multiracial Americans. Mixed-race adults are more likely than the general public to have friends who are multiracial. According to the survey, eight-in-ten multiracial adults say at least some of their friends are mixed-race, compared with 62% for all adults."
http://www.pewsocialtrends.org/2015/06/11/multiracial-in-america/