Oh, please do something special for your W as your W, not something mundane, not something for her as one of the gang. That would just highlight the problems with emotional and physical intimacy that you are having in your M. Don't be afraid to show that you see *her* and that you love *her*.
Fine, get candy, a card, and pizza for the gang. All nice things no doubt. But don't forget something that says that *she* is special in her uniqueness. Isn't that after all the point of Valentine's day? To show your romantic partner that you are really all bout them?