I have plenty of friends that date other races.
I also have a few relatives that are mixed maired, if that's a word. One of them lives in France and she's Chinese and he's French. They both know English but neither know each others' native language.
I don't see anything wrong with it. I mean, you see alot of Chinese/Vietnamese/Japanese/Korean people with each other, yet, no one says nothing about them! Even my brother dates a Cambodian girl. She's very dark skinned and he's light.
No biggie.