The person you responded to asked how many. The answer is that not many. And it is not like having black friends meant you won't be racist. Nor having wife or mom you like prevents mysoginy. Personal relationships have part only up to the point.
That being said, some nazi members had a Jew they personally liked or protected. It dis mot stopped genocide.
I'm proud you could come up with one guy who was saintly. For the rest of us non-saintly people, it's pretty tough to maintain and tend friendships with people who think we're bad, immoral, subhuman, or otherwise less than. Just makes conversation hard to keep up!