Have you come out to them yet? Or is the issue here because theyre the way they are that you dont want to come out to them?
A bit more background on what has happened so far might help people offer you more directed advice. Many people here have had dealing with less than understanding family and will probably have some suggestions. But give us a bit more and lets see where the discussion takes us.
whenever they use gay as dirogotory term or like make a homophobic joke i defend them but other than that no