Props Rollo. I'm repping you for that because it was the straight, unabashed truth. Women you want to f*ck you will find a way to
OP, take Five to One's advice. "Accidentaly" stimulate her. Or you could do what I do and "force the issue" (but only when you know the chick REALLY is into you, be careful because this may be dangerous). It may sound bad, but a girl that will let you do everything but touch her pu$$y is really DTF. So just go ahead and do it. If it truly does bother her (which I doubt it does) she'll let you know. More than likely this is just a sh*t test to see how much of a man you are. Real men go after what they want. Chicks LOVE to be dominated and man-handled in bed
You could always use the "wash, rinse, repeat" method too. Get her worked up and if she stops you (aka "this is so wrong, we shouldn't be doing this'), agree with her ("You're right... but it feels good though"), stop, wait awhile, then begin to escalate again. She'll break eventually, but if she doesn't... turn on the lights, get up, get dressed and completely kill the mood
And to whoever said it took them 8 months... I hope it was the best sex ever because throwing away 8 months of time for a piece of a$$ is a waste. You could have spent that time doing much better things