Not really, you see "Once you go black, we don't want you back" stuff all the time.
As for the WM/EAW relationship, I really think the Vietnam War screwed over the view of those relationships, the "me love you long time" jokes and the East Asian woman as a possession idea.
I might be biased but considering the worse history between blacks and whites, I'd say relations between them are more seen as illegitimate and lustful, whereas white and east asian relations can be more based on friendship, especially in a 'mutual attraction between nerds' kind of way