Balor x Farmer makes a lot of sense
I may be currently procastinating his 8th event heart because I still haven't decided If I want to date everyone or no (I have a 'wants to see every dialogue disease') but thinking about it, he's the only one without a place of his own and he's clearly grown attached to Mistria, if I remember correctly he even alludes to settling down in the future, it just makes sense for me that he would do so with the Farmer in the town that he has grown to love