Happiness is subjective. I am sure stopping this conflict will make them more happy than any romantic partner might.

[Coming from the sociopath, that's probably not a glowing endorsement, even if his point is sound enough. There's some deeper point about marriage being a symbol and not actually preventing you from meeting your needs in other ways, but Kylo Ren isn't about to start talking about that.

Especially not to Poe.]

If you have another way, then I suggest you propose it. As I see it, there are two viable options.