The second cat might help if he is board however he might just be watching you because he wants something. If he has enough food and water he might desire a treat, he might want attention and want you to talk to him or he might just want to be petted. My adult male Himalayan is very social and affectionate. He can sit there and stare at me until I think he is frozen or something and I will go tap him to make sure he is ok (LOL). It’s a personality thing! In his own way, he feels he is communicating with me and being a part of the family. He is watching me to see when my hand will be available for his next petting session, literally!