She stops

Just as you are about to cum she stops her hands and lets go of your cock. It twitches but nothing comes out.

"Whoops, hihihi" she giggles while watching you squirm.

You are completely frustrated, just a few seconds ago you were experiencing pure pleasure, now your cock is in pain due to the blue balls and the girl is having fun at you.

After a few minutes your orgasm subdues.

"Ok let's go back" the girl says as she grabs your cock once again pumping up and down. She then starts sucking and licking the tip.

You moan loud as she sucks on your cock it doesn't takes long for you to fell the orgasm approaching.

"Nope"

And again she stops just as you are about to cum,you want to curse her but all your mind can think about is coming.

"You know, even though I want to do this all day I guess I can let you cum, all you need to do is beg for it". The girl says with a wicked smile.