Hmm, maybe he tried to reach out to you because he struck out with your gf? They are tenacious proselytizers.

As for non white people, Mormonism is systemically racist. They still have books that discourage their members from marrying outside their race. On an individual level it's sort of a mixed bag. Some white Mormons are your bog standard chuds, while others are proud to accept everyone, even if that can border on tokenism.