I’m adopting a stray cat from my neighborhood, but I feel guilty…

Over several months, this stray kitty and I have really bonded. She runs up to me every time I come home and watches me do things through the window. She really seems to want to come in, so I’m having her checked out and will hopefull bring her inside soon.

However, I’m dealing with a lot of guilt because she has a brother. They aren’t super bonded as far as I can tell as they spend most of their day apart, but they do sleep together. I really cannot take him in as I already have other cats and she puts me at max capacity. It’s getting cold here. Will he freeze to death without her warmth at night? It will be below 40F at night soon. It also makes me so sad to imagine his feelings about suddenly not seeing her. Will he be sad?

I’m hoping he’ll still visit periodically as he’s been doing, so they can say hi to each other and he won’t think she’s dead or something.

I’ve tried to get him adopted so he’ll have a loving, warm home to go to, too. But he’s really shy so not many people like him. All of the siblings from this stray litter have now been adopted except for him.

My ex vet tech boss says there’s nothing to worry about, that cats are really resilient and adaptive. But idk, I feel so guilty and selfish.

Should I consider taking him to a rescue or shelter? This thought also makes me really sad because that seems like double trauma. One of my main anxieties is about the proximity of the main road, so I want make a rational and safe decision. But maybe he loves being outside and is fine?

I have a cat house for them on my porch for shelter but they don’t really use it so I doubt it’d be of help to him in the future.

Please help! I’m finding it so hard to separate emotions and think reasonably. Thanks for reading 😊