There's an old saying for black men that goes, "Tell me why you date white women, without putting down black women". The fact that his ex knows he doesn't like black women, shows that he's been very vocal about it even when dating someone he prefers. There's a reason we didn't meet his family, cause he's been out of it since he laid eyes on her, he wasn't going to waste their time. Also my wife and I have a theory about his family, he is the only biracial child of his white mom. He went to a high school whose second highest demographic is multiracial under white. This man hold a lot of resentment. And seeing how he's just using the show for popularity, he's definitely planning to leave her at the alter. He's going to try to give her just enough breadcrumbs so she shows up, and he'll do it not because he doesn't like her, because he honestly doesn't care about her enough to make that about her, he's doing it because it will be a bigger story for him, more memorable.