Welcome to Pet Talk Rosethecopycat. I'm the one that has 3 male neutered cats. They get along very well. My situation was very similar to yours. I decided to adopt another male cat because my oldest cat Storm ,who is 6 years old, needed a more playful cat. Pepper is 5 years old but didn't want to play very much. He loves to eat and sleep all day. It got to the point where Storm was being a bully toward him because he really wanted to play with Pepper. I wanted another male because from my experience they are more loving and seem to do better in a multicat household. I adopted Sunny when he was 8 months old. He's now 2. Bringing Sunny into my house was the best thing that I ever did. Storm has a great playmate and Pepper is even interacting and playing more with both cats. Sure they'll play rough and have their spats but for the most part they all get along very well and are very happy. I would highly recommend that you adopt another male cat. Good luck.