Answer:
Definitely not. There are lots of mixed marriages of different kinds: Hungarian man with foreign wife or vica versa, and the parties can be both from the Eastern or Western world.
Nowadays around 10 million Hungarians live in Hungary and cca. 3.5 million outside of Hungary, so lots of mixed marriages have Hungarians parties but not from the same country. Also there are thousands of marriages between Britons, Americans, Russians, French.
Hungarians usually don't tend to step into marriage with African or European/American African people. I'ts not a kind of racism. The number of African people in Hungay is (I guess) less than 0,1% of the whole population so it is a little bit exotic to even meet African people there.