My cat loves people but I work 40 hours a week and would like to get him a friend.

I’m pretty sure he hates all Male cats. When the Neighbors male cat comes to the sliding glass door my cat attacks the glass trying to get at the other cat.

But I think he might be ok and even like a Female cat. But how do I test this? I would hate to have to take a cat back to the pound.
I got him from the humane society at 5 years old, declawed in front. For all I know he has always been an only cat and likes it that way. But I feel bad when he is home alone.