You stop for a moment.

You stop moving your hand but leave it on Nicole's pussy so she can still feel your presence. She makes a whimpering noise and removes her mouth from your cock with a wet slurping noise. She looks up at you with a begging look a little drool running down her chin. "Wh..Wh....Why Please Don't Stop! I AM SO CLOSE!" She begs.

You look down at Nicole's face and your heartbreaks a little but you have made your choice and you say, "What do I get if I keep going?"

She looks at you completely confused and stutters out, "A blowjob you were getting a blowjob!"

She got a point but you shrug your shoulders and say simply, "What else?" You see the gears working in her head you realize what if she just backs off and finishes her self off? This may not not work out like you planned. You could start again and hope she continues, you could make an offer, or you can see if she offers anything?