OK...I have to be honest with you here. My RB Lola was my only kitty for 2 years and was very much a quasi-human mommie's girl, when we took in a stray kitty. We had her for a total of 2 months, during which I hardly ever saw Lola, she stayed under the bed or in the closets. She also dropped 3 lbs. cause she didn't want to eat either, over all she just seemed depressed. We ended up finding a very loving home for the kitty (now named Allie) and Lola was back to her jubilant self within a couple days!

My mom had a siamese cat that was about six months old when she adopted a stray, they hated each other first and now you never ever see one without the other. They are absolutely inseperable.

I guess what I am trying to say is: you will never know unless you try! Give it a couple weeks and see if they don't get used to each other.

*crosses fingers* GET THE KITTY, GET THE KITTY!!