There's loads to do in NY full stop. The touristy stuff is enough to keep anyone busy and can't see how things like the Empire State Building, top of the Rockerfeller Center (definitely at night!) etc... wouldn't appeal to both sexes.
Pretty sure you could get a helicopter ride over Manhatten.
Strangely enough, when I went with my ex, it was him who wanted to shop rather than me, in Macys, he went to shop and I went to Starbucks lol :)
Check out which gigs are on, places like Madison Square Gardens.