You need it.

You toss and turn for a while trying to get comfy to no avail. You end up on your back staring at the ceiling with a constant stretching feeling in your pants, your cock hasn't gone down yet and you know your not getting to sleep without it going.

You lie there and think about Sarah knowing about you touching yourself at night and the embaressment you felt trying to weigh up the need to deal with your throbbing rod and the reaction of Sarah to you jacking off again. Eventually you knew it was too much to contend with and slowly reached your hand down to your waistline looking at Sarah to make sure she didnt wake up then under your pjs but on top of your underwear as you had done many times because it doesn't make as much noise.

You started to massage the tip of your cock rolling your thumb over and over this gave you just enough pleasure to build your orgasm up without ever making you moan or make any unneccesary noise. Then your heart skipped a beat as Sarah roled over her hand landing on the top of your thigh just below your balls making you moan a little but luckily you still see Sarahs eyes closed and sound asleep.

Unfortunately her hand on your thigh riles you up so much more and your hand immediately goes under your pants and you grab your stiff shaft slowing stroking up and down all 7 inches of it. You try to imagine that its Sarahs hand on your cock building your orgasm spreading your precum all over your cock in a moment of ecstasy you decide to take down your underwear and you feel your cock spring out and Sarahs hand grazing it.

Your heart stops again Sarah turns around rapidly pulling the cover of her body and yours showing of her immaculate ass. Your feeling risky and you start stroking your cock rapidly staring at her ass imagining shoving your cock raw into her pussy and cumming inside but you'll have to suffice with your hand. This fantasy quickly throws you over the edge and just in time you pull your pants back up to contain the jets of cum from your pulsing cock wetting your underwear and keeping you in esctasy.

In your esctasy Sarah rolls back over and wraps her arm around you and your stuck with your cum spread all across your abdomen legs and groin having to go asleep as to not disturb Sarah.