First I would have to agree DON'T GET RID OF STUART, I have to be a little concerned, if you are to have children , will he be jealous of the child as well?

Secondly DONOT LET HIM BE MEAN IN ANYWAY TO STUART. let him know this is an absolute NO NO.

Thirdly, try to encourage him to spend time with the cat and get to know him, and maybe distance yourself a little from stuart, so that hubby can try and form a bond with him.

And last but not least if none of the above work, GIVE HUBBY THE ELBOW, but seriously I think you can work it out, to a nice compromise where everyone is happy including stuart.

HERES HOPING