Hello everybody, I need any advice that anyone can give. I have two cats, one girl that is 4 years old and one boy who is 3. We got the girl first when she was a kitten, and then the boy next when he was a kitten as well. When we first got the boy as a kitten, the two got along pretty decently. But as he grew, he became more aggressive towards her. We thought it was just him growing through a kitten phase, but it didn't stop once he was full grown. Even after he was neutered, it didn't stop.
They fight all the time, and he is constantly stalking her around the house. There are moments of peace where they can be sitting on the couch near each other or in the same room without any fights, but mainly there is aggression.
I don't know what to do because I love them both we've raised them since they were both babies. My parents are seriously thinking about rehoming him, but I want to try any avenue we can before throwing in the towel. He's a member of the family, and I'd be heartbroken if he needs to go away. Any advice is really appreciated.