Virtuosity : Found this interesting…..

"While filming the 1995 film, Virtuosity, Washington refused to kiss his white female co-star, Kelly Lynch, during a romantic scene between their characters. During an interview, Lynch stated that while she wanted to, "[Denzel] felt very strongly about it. I felt there is no problem with interracial romance. But Denzel felt strongly that the white males, who were the target audience of this movie, would not want to see him kiss a white woman." Lynch further stated, "That's a shame. I feel badly about it. I keep thinking that the world's changed, but it hasn't changed quick enough".[1] However, in 1998, Washington starred in a scene of a sexual nature with caucasian actress Milla Jovovich, in Spike Lee's He Got Game."

Ethigirl, the audience that would go to see a high budget sci-fi film is very different from the audience that would go to see a Spike Lee film. I believe that in the mid 1990s, he had a valid point. Is the same true nowadays? Who knows?

Interesting bit of trivia thought I might add: In Kathryn Bigelow's cyberpunk film "Strange Days" also released in 1995, Ray Fiennes and Angela Basset's characters share a kiss at the end which supposedly marked the first American on-screen interracial kiss.
Anyway, both movies fall into a similar genre, and it didn't seem to bother the writers and exec's that time? o.o

That actually wasn't the first on-screen interracial kiss at all, but Strange Days kicked a**,though

Uhh.. Captain Kirk's kissing Uhura in the 60's Star Trek was the first onscreen television kiss, I seriously doubt it took movies 30 years to catch up.

Comfort the disturbed and disturb the comfortable

Frequently stated but totally incorrect. Star Trek's Plato's Stepchildren was not the first onscreen interracial TV kiss

http://www.dailymail.co.uk/news/article-3326660/BFI-reveals-TV-s-interracial-kiss-shown-six-years-Star-Trek-s.html

Also see here for further examples: https://en.wikipedia.org/wiki/Plato%27s_Stepchildren#Production_and_reception

As for Washington, he might as well have agreed to the love scene because the film didn't do that well anyway but hindsight eh?