Family Ties/Heather enters your room, wearing nothing but an over size T-shirt.
You glance up from laying in your bed to see your 16 year old sister locking the door behind her. "Hey Heather..., what's up?" You say with a small crack in your voice. You had stripped down to your boxers before slipping under the covers, sitting there playing your hand held video game. The only light in the room is from a low level desk lamp and the light from your game, but you can still see your sister eyeing you lustfully. You can see her nipples poking into her shirt that only barely goes past her pussy.
"Ah nothin' just wanted to cuddle." she claims innocently enough. She used to do this all the time when you both were younger, but you can't help but feel she has something else on her mind. She pulls up the covers and slides up next to you. "I saw you spying on Mom and Dad." she says bluntly. You panic for a moment before blurting out "I don't know what you're talking about."
She gives a playful giggle before running a few finger tips up your inner thigh under the covers. "Sure you don't. Then why do you have this nice, hard stiffy?" She teases before cupping your boner that was still going from the earlier erotic display. You let out a moan as she starts massaging and pulling at your prick. "Shhh sh sh..." She whispers, " I ain't mad at you, just a little jealous." She teases while yanking your boxers down and grabbing the full length of your rock hard shaft and stroking it. "After all, Mommy's not the only tits and pussy you have been peeking on in the house and I was starting to feel a little forgotten." She rips off the covers and leans her head down to place a tender kiss on the head of your cock. You can feel yourself throb and pulse under the touch of her tender lips, but can't manage to bring yourself to say anything. "But don't you worry, little brother. Your big sister is going to take real good care of you all night long." She says while giving your cock head another loving kiss.
Then she slip between your legs on her belly and takes hold of your cock again. "Now... where should we stick this impressive log of meat? Do you want it in Sissy's mouth... between her big, firm titties or deep in her wet pussy?" You try to think while she toys with your cock. This is your chance to lose your virginity! The question is, do you go right for it or do you build up to it?