[thegrayprincejt]

So after me assuring her I wasn't bothered, nor going to spill the secret to their parents or our friends, she deducted I was in fact encouraging the behavior.

That's when she began doing more than just telling me, she'd tease more openly in the room with me there. Three of us hanging out she'd get comfortable, wear a big baggy shirt with nothing on under and end up showing off her body, or give me head while he watched.

Finally he got aggravated one night. Called her a fucking prick tease. She looked at me, I shrugged. So she got up and walked over to him than sank down on her knees and began undoing his pants while kissing and nibbling at his stomach and asking him what he wanted from his sister. He was half stammering when she reached in and pulled his cock out. She giggled and kissed the tip before starting to stroke him.

When she had him nice and hard, she pulled the shirt off, sitting there between his knees bare ass naked before starting to jerk him off again. Only now she leaned her head down licking and sucking his balls and shaft. Every time he'd breathe heavy she'd sit back and just run her nails up and down his shaft.

I knew this game. She wanted him to commit to something. He had to choose what she did. And after a little while he did. After another pull back and her starting to run her nails he smacked her hand away and pressed his head against her lips. She almost purred as she opened her mouth and took half of his cock in and began giving a eager but lingering blowjob.

It didn't take long before he grabbed for her head and she gagged as he pushed into her throat. She moaned and bobbed her head a little, her fingers busy pulling her little bush and rubbing her pussy. Then he moaned and arched his hips. I watched her happily swallow his full load then lick his head clean before she waved me over to fuck her.

Things changed that night, made the next two months more interesting.