You can't simply "give them partners", because what's fueling many of the things that you described at the top is materialism, female hypergamy, cultural/social

You can't simply "give them partners", because what's fueling many of the things that you described at the top is materialism, female hypergamy, cultural/social pressures, inbreeding/purity ideology (pure blood), xenophobia, etc... Presenting a female partner won't take away her expectations (including expensive wedding fantasies and high class lifestyle), her family's expectations, expected social duties, etc... And I will shed light on the elephant in the room, that many who have not lived in South Korea don't know about, but paying for sex is cheap and easy to find everywhere. Many such men would rather pay for sex, than be burdened with all the duties and expectations that a female partner would bring. A significant percentage of South Korea's problem is their own xenophobia and Korean ethnic nationalism (pure blood ideology). Which goes to extremes, and is even bias against other Asians, who don't look Korean enough or are proven not to have Korean blood. Where with other countries, they can offset low birth rates, marriage partners, and their tax base with immigration, South Korea won't. Consequently, until the mind set changes, South Korea is steadily heading towards massive population reduction. Until only a small number of the "purest" are left, and a significant number like it that way.