I'd like a spin-off of this guy before his wife died... it could be before when they weren't dating yet.
The (future) wife would be one of the only people and the only female to ever talk to my dude and he would always look forward to the next time he gets to see her again. He falls in love with her for her kindness and so he confesses to her and she confesses as well... and then they start dating.
They go on countless dates and they get so close to each other that they're inseparable. He casually proposes one day and she says yes without hesitation and with tears in her eyes. Then it's their wedding day and they say the usual vows and "till death do us part". It ends with him saying to himself "I promise I'll make you happy for the rest of your life, I love you so much _".
I wouldn't want to see her death and so that's why I ended this short story after they get married on their wedding day. I also didn't know how to implement the cats into the story but let's say the guy had his cat and the wife had her own cat and when they got married, they had two cats.