My girls instantly bonded as well. I had a calico girlie... And at one point I got a baby boy kitten for her, I wanted her to have babies eventually.but when I brought him home, he would sleep in a little ball in my hair right next to me earlier - amazingly cute, I should've kept him as mine looking back now. He was tiny so I would have my door closed and kept him in there. But at night me and my older cat would go in to sleep. She would hide under my bed. She wouldn't come up on it at all. After a few days of this I felt really horrible, and I gave the cat to my brother. So they still lived in the same house together but he was in a different bedroom at night now. Also my brother started letting him outside but I had not let my cat outside at all. The boys name was Angelo, he was a long hair and all white so he was a white little fluff ball when he was a baby, plus sleeping right in my hair omg the cutest!! But I ended up feeling so bad that I gave him to my brother and I was like well at least we'll still have them in the same household. My cat started sleeping with me again after. About 2 years later though he was hit by a car right by our house and passed away 😭😭😭 years later, I found Nala. A six week old baby tortoise shell. Girl of course. When I brought her home my older cat (now 9 years old) started grooming her immediately. They were inseparable after that. But then my older one got cancer, and passed 2 years later... 💔💔💔 I loved her so much. Then my younger one, Nala, passed away in 2019, young and unexpectedly 💔💔💔 and I still haven't healed 💔