For the interim solution, fly on another carrier that will offer the 2-2-2 seating like AA or JL. For airlines like CX, NZ, VS, and AC, you will find the barrier and the herringbone design as more and more people find that they do want to fly 'alone' and if they're apart from their loved ones, perhaps a few hours away from each other is a good thing!

If you insist on wanting to fly with CX, your choices are economy and First Class. Actually you can't even sit next to each other in the new F as all seats are seperate.

Maybe just buy your wife a teddy bear and ask her to hold on to that. At least for take off and landing, assuming you'd still want to fly on CX in Business Class.

Sorry.

Oh and welcome to FlyerTalk and the Cathay Pacific forum, btw.