The only other way, AFAIK, would be interracial marriage. If you can make it work that way, more power to ya, but I wouldn’t recommend it personally.
I’ve seen a handful of very successful interracial marriages. God bless and encourage them! But there are
some big challenges that couples and their kids have to be very strong to overcome. The ones that worked (that I saw) shared a central, and indomitable, Christian faith.
I have encountered quite a few interracial marriages and they seem to be more likely to persist than the monoracial variety. I am not referring to any sort of arrangement that could come under the old category of “shacking up,’ but rather actual marriages proposed and stood up for and consummated. Most occurred because partners were looking for a stability they couldn’t find on their own sides of the divide.