He doesn't cum yet

The stranger's cock by now is incredibly hard and looked almost angry from the veins running along it.

You ask "Do you want to cum?"

To which he replied "I think I might need some more... uh... attention first."

So you continue to jerk him all the way home and by the time your stop comes up he still hasn't cum. You decide to walk with him back to your place where he could fuck you senseless to his heart's content until he dumped his hot cum all over you, not that he could not also fuck you senseless on the subway, but it was a nice night for a walk anyway.

You step out of the subway and walk side by side, his hand under your skirt variably squeezing your asscheeks, prodding at your asshole or rubbing your pussy, and your hand still stroking his cock, only now it was more like you were leading him by a leash. This sort of exhibitionism turns you on, and your nipples begin to poke through the fabric of your shirt.