I adhere to the theory that interaction of "seeing the other dwarf" happens when 2 dwarfs are adjacent tiles to each other.
Marriage suites seems to help increase the progression of relationship.
I think it goes from nothing, to friendly terms, to friendly, and I think (friends), then can become lovers, and if possible, marriage.
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#fbhuur# f=cabinet, b=bedroom 3x3, h=chest, +=floor
##+?cchd c=chair, h=tavern coffer with mugs, d=door lockable
#fbhttr# t=table, u=meals, r=drinks, ?=statue or wall
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Best micro control I can do it put the 2 in their own squad, and move them in and lock the door.
I can activate a 3x3 zone (tables, chairs, meal, drink and coffer), and add it as part of the tavern.
I've seen one dwarf having no relationship with the other, while the other has friendly terms relationship already.
A lot of "enjoy listening" in the thoughts happen. And steadily increases when they become friendly terms+.
I've seen grudges, but did not do experiments if the grudge relation can be reversed.
I've seen friendly terms where one side feel uneasy after an argument, while the other feels positive after having an argument.
Have to keep an eye out of worship needs as well, but a temple zone can be in the same tiles.
I am not sure of cabinet or chest in personal bedroom is needed, but it's just part of my setup.