My Oma had friends who had a cat for about 16 years. It wasn't until the last year of its life that they discovered their cat was also owned by a neighbor up the road. The friends would let the cat out at night, and it would spend the night with the neighbor, who would let it out during the day.
I didn't know anything about cats, but my neighbor had one who came onto my porch every morning. I would pet him and tell him goodbye on my way to work. If it was the weekend, he'd come in and visit with me.
The neighbors thought I loved cats because of how I treated their cat. So they gave me two kittens, one at a time. After my fiance explained what cats need, we bought the litter box, food, etc. I was worried about raising kitten #1. I spent at least 5 hours a day playing with her and took her everywhere (except work). She was a super smart cat and very mischievous. She would jump onto the top of doors so she could jump on whoever went through the doorway. While my fiance typed his books, she would sit on his head and watch the rod things in the typewriter go up and down. When anyone took a shower, she'd stand on the edge of the tub between the curtain and liner and swat at the unlucky person who was in there. For 14 years, she woke me up a couple of minutes before the alarm went off. She was a great cat! So was her "sister", but not as imaginative.