Are there any tragic, traumatic, or otherwise depressing things that have happened to your wife/husband, or any struggles that they experience that really bring the feels for you?
My poor Flayn's life has been filled with various tragedies. After her race was brought to near extinction, she'd found herself fighting in an ancient war where she was grievously wounded near the point of death. After which she remained in a comatose state for nearly a millennium, only to awaken to a world completely foreign to her, and one without her cherished mother. If not for the care of her father Seteth, she would have died for certain.
And even after she wakes up it takes a while before she can begin to experience anything resembling contentment again, as she's forced to live in total isolation for longer than anyone should. It's only until after her father Seteth had established himself at the Garreg Mach Monastery (and created a cover story for her to come out of hiding) that she could finally get the social interaction she was so desperately starved for.
Some time after that, however, she gets kidnapped and held captive by a group of dark wizards who take blood from her to do wicked experiments. Thankfully it didn't go on for long before I (as the protag) rescued her from their clutches. That peace doesn't last for long sadly, as just a few months later a continent-wide war breaks out, and gentle Flayn is thrust into battle once again.
However, all of that is nothing compared to what you are potentially made to do to Flayn if you side against her faction. Some years later a battle with her and Seteth approaches, and they both will express dismay over having to fight you after the good you'd done for them, but fight them you must. There are two outcomes that fight can have: if you the protag fight Flayn or Seteth personally, they will submit to your will and retreat after battle, going into hiding.
But if you don't get the chance, they stay in the fight, to the death. Flayn will express how sad it makes her, but that she must uphold her duty. And then you, with your army that you've been crafting throughout this whole war campaign, kill her. Just as she dies, she apologizes to her father for dying before him, and breathlessly declares that she will be returning to her mother. I still can't think about it without getting incredibly distraught, but thankfully I never experienced this scenario personally.
Anyway, I'd like to know if there are any heavy experiences your wife/husband had or has that affect you in the same way. Sorry this post was so long-winded; there's just a lot of sorrow beneath Flayn's joy that many don't realize, but I think that makes her all the more precious and beautiful!
(Also it's implied that if she doesn't get married after the war's end she goes to sleep for another millennium which I think is also sad but couldn't really fit anywhere else. That's all the more motivation for me to always be by her side <3)