How about a home cooked surprise dinner? That would be a good way to whip up yr hubby's fave dishes :)
1 Altitude has a great view and nice fare. Or the restaurants at MBS or RWS are yr best bets!!
Foodpanda! Or you can order those chef that cooks at your home for Valentine's day dinner
If you're looking for chinese you can try Forest at RWS.
Matsuo at Goldhill Plaza is pretty good if you're in Singapore.
thanks