Oh I am so sorry to hear you lost your little "old" man too. Cats can be such good friends. I have two 15 yr old girls and one I took in that is maybe 1 1/2 or a bit more old. She loves to play and my girls just look at her. It took a couple of months of keeping my girls in my bedroom at night but they get along enough now to wander around the house all they want.
Just keep smiling and thinking of those kitty hugs and meows! ((())) I also feed a tomcat outside. You could have him.... He is cute but a man's cat for sure.