I keep hoping my cat and Lady will play. Yours looks like they really like each other. Mine don't hate each other, they just ignore each other!
How old is your cat you have to remember Yogi is just a new kitten he's only 10 1/2 weeks old and Charlie adores both my kittens they are only 1 week apart in age and they are about the same size as him so he likes them. It won't be long until they are bigger than Charlie I don't know how he will feel about them then.