I always respected my cat as a person. Getting another cat made the situation worsen. I love him but I can't trust him anymore. I would keep him if the space where we reside had more. It's sad but I guess violence ends most relationships. He bites too hard not playful nips. Cats are like people when they become rejected or replaced they become stalkers lurking in the hall waiting outside your door waiting to cat fight who stole away your attention. Sorry we can no longer share affection. I guess he is not the cuddle kiss on the lips & give a little smoochie to anymore. He is the feed me & leave me alone kind of pet. Who don't play well with others at all. I was just trying to give him a friend & then he became the enemy.