Withdraw, and let her swallow.

You decide that it would be better not to get her pregnant, and pull your dick from her hole slowly. As soon as it is out, she moves around a little to get a good grip on your dick. Her hand fists around it and begins to jack you off, as her mouth descends onto your cock. She pumps you up and down with her hand as she licks the head of your cock, and you groan as her tongue begins to slide down your dick. You can hold on no longer, and you grab the back of her head and push her down onto your cock until she is deep throating your shaft, and, with a grunt, you let your seed fly down her throat. She chokes and gags a little, but manages to keep (most) of your cum in. She pulls her head off your now limp cock and she moves up and kisses you full on the lips, her tongue darting inside of yours as you taste your own cum still on and in her mouth. The feeling is strange, but not entirely undesirable.