I'm pretty drunk at the moment but what the hell.....
You have to red-pill your partner in stages. Note that this might take a deal of time. Hit him with a red-pill then let him recover and repeat. Where you start depends on how blue-pilled he his. If he is really blue pilled he may be beyond hope.
The trick is to start with race. This works well because most liberals are conscious about evolution but don't apply it to humans for some dumb reason. Discuss evolution and humans with him. In particular, discuss the fact that the different races grew up on different continents in different environments where they were subjected to different evolutionary pressures.
Then discuss the Olympics with him. Point out that the fastest runners in the world are Negros and suggest that this may be because of evolution. Point out that the fastest swimmers are Caucasians and suggest the same thing. Then move onto brain structure and intelligence. etc.
Once he is redpilled on race, redpill him about some of the liberal myths of history. Point out that the white race ended slavery etc. etc. Point out that the wealthiest parts of Africa are the former colonies and the poorest parts are the places where Europeans never stood foot. Point out that blacks have never accomplished anything. Suggest that colonialism may have benefited certain parts of Africa like Rhodesia etc. and that those parts of Africa have gone backwards since the blacks took over. Then move onto a discussion about white on black and black on white crime rates. Since statistics are objective, he will have to own up to this sort of thing.
You can then move onto a discussion about political policy etc. Ever read "The camp of the saints?" Plant the idea in his head and let his mind progress on its own from there.
Then you can move onto the major red pills.