My partner and I booked tickets with Singapore Airlines last year that were non-refundable. Unfortunately, he will not be able to fly on our booked flights, however I am still going ahead with the flights.
He wasn't going to call and cancel the flights because he won't get any money back, but now I am concerned about the SG no show policy.

If he does not show up at check in, and we are on the same itinerary, will they cancel all my flights as well as his? Or will they cancel just his flights?
If we cancel a non-refundable flight, will they still charge us a cancellation fee?

Thanks!