We adopted a second cat, Arya, a few months ago. First two weeks or so were a bit tough trying to get our other cat, Sansa, used to her and not hissing and swatting at her constantly. Now Arya's a little trolling shit half the time, but she also loves to snuggle, she plays fetch and makes some pretty adorable noises most of the time.
Cat on cat affection is pretty damn great.
Eh, calling it affection is pretty generous. It's mostly invasion of space from Arya and grudging tolerance from Sansa, though Sansa will sometimes groom Arya. Of course, then Arya decides to start biting her in the neck and wrestling her.
We lost this very good boy today at the ripe ol' age of 8 years old. He had a litany of health issues including epilepsy and a very weakened immune system. He went out on his own terms thankfully, we didn't have to make the decision for him. RIP buddy boy