1. Bring your cat over to live with you. (Mine have been staying at my parent's until recently)
2. Make it clear to your cat that you love it and want it to cuddle with YOU.
The result is a cat who wants nothing to do with you, and only wants to hang out with the person who doesn't care whether they have a cat in their lap or not.
With any luck that person will be won over by the obvious favoritism