We have 2 feline overseers here. One is mine, well, I am her foster-human, and the other is my hubby's. After nearly a year of married life our 2 cats are finally able to be in the same room together and sometimes on the same couch as long as there is a lap under each of them.
Mine is a blimpy ginger short-hair female, about 12 years old and his is a tabby shorthair female, very tiny for her 14 years.
I decided years ago that any boyfriend/partner I had would have to be a cat person or it just wasn't going to work out. Hubby is totally devoted to his cats, past and present, so I've done good.