Kate knew what a blow job was. She may have been inexperienced, but she wasn't stupid. She was about to give her first blow job.
Kate unfolded her legs and laid her head down on Jack stomach. She let his cock go from her hand and moved her mouth over it. Jack moaned from the new sensation.
"I can't see" Jack whispered after a few minutes.
Kate looked back up at him and moved her body around so that Jack could watch. She took his cock back in her hand, pulled it up straight and put it right back in her mouth.
Jack watched closely as his little sis moved up and down on his erection. The pleasure intensified with her jacking it again and with him watching. Jack's heart was beating fast and his breathing was hard. His hips pushed up towards Kate's mouth almost involuntarily.
Kate was really getting into it now. She moved around more between Jack's legs and pushed all of her hair to one side. One second she would be sucking away, then she would look up at Jack. The tingling between her legs had increased to something she had never felt before in her entire life. She tried to focus on holding her mouth just right.
She didn't have to focus for too long. Jack's body tensed and he gave her head a gentle push to the side. The second Kate released his cock from her mouth, cum shot all over Jack's body.
"Holy shit!" exclaimed Jack. He was out of breath.
Kate was breathing hard too. "How'd I do?"
"You were amazing! I didn't know it was going to feel that good." Jack tried to prop himself up on his elbows. He reached underneath the pillow next to him and produce a towel.
"Planning ahead?" Kate laughed.
"Well you did give me a heads up." Jack laughed as he cleaned himself up.
Kate crawled back up towards Jack's face. "Thanks for not doing that in my mouth. I don't think I'm ready for that."
"I wouldn't do that to you, sis. That wouldn't be fair on your first time." Jack said as he pulled her down towards him for a kiss. "I wouldn't do anything to mess this up."
"You made a pretty good mess!" Kate said, as she moved her hand across and down Jack's body.
"You helped" Jack said as he squeezed her tight and kissed her neck. "So ladies first, then it's the gentleman's pleasure."
"Ok, but I have to go pee first."
Jack reluctantly let Kate get up from the bed. She took a drink from the water bottle on his nightstand and disappeared into the bathroom.
Kate pulled down her underwear and couldn't help notice the wet spot that had formed. She rubbed her thumb over the slippery spot in her underwear and then move up to touch her pussy. She was soaked. She lightly rubbed her clit, and took in a deep breath, feeling its heightened sensitivity. "Oh my God." she said under her breath. She wondered if she was in over her head. She had loved giving the blow job though. She would never again think of another girl as a slut just for giving head. Kate peed, used a ton a toilet paper, and pulled her underwear back up. She got up her nerve again and went back in Jack's room.
"I'm glad you came back" Jack said smiling at her.
"You worried that I would kiss and run? I always mean what I text" Kate said. Then she crossed her arms, reached down, and pulled her top off in one smooth motion. Jack loved it. He was finally looking at the pair of tits that he had desired for years. Kate put her hands over her boobs and slid back into bed.
Jack got up on his side and slowly moved one of Kate's hands away and then the other. Kate relented and looked up innocently at her brother. He kissed her deeply as he touched her. This was different from earlier in the day. Now Kate was topless and he had full access. Jack slowly kissed his way down to Kate's left breast and kissed all the way around her hard left nipple as he gently squeezed her right breast. Kate inhaled sharply as Jack took her nipple into his mouth and began to suck it. She ran one of her hands into his hair and moaned softly at this new feeling.
"That's nice" Kate said dreamily.
Jack looked up at her as he moved from left to right and continued his kissing, sucking, and squeezing. Kate didn't want it to end. Her nervousness was gone and she loved the feel of her brother kissing her body freely.
Jack pulled her close and pulled her on top of him. They kissed again and Kate pushed her upper body up away from Jack to break the kiss. Then she slowly began to lower herself back down, but when she did, she put one of her nipples right on Jack's lips for him to suck. Kate slid her body down Jack's body and was soon being poked through her panties by his hard again dick. As Jack sucked her tits, she straddled him and began rubbing up and down. Kate was having all kinds of thoughts now. Jack pulled her back down again for more kissing and he grabbed her ass. He pushed his dick hard against Kate's panties, wishing he could push through them.
Kate was breathing hard. She suddenly thought that this was all getting out of hand. She moved off of Jack, but he followed. His hand moved between her legs. His fingers on the wet spot on her panties, and he pressed there gently. He kissed her again, and put his hand inside her panties. Jack loved feeling his sister's wetness from being with him. Kate opened her legs for her brother. She needed to be touched there - right now.
Jack did still sense some nervousness from Kate about him touching her pussy, so he moved slowly and gently. When he began making little circles around Kate's clit, she wasn't quiet anymore. She gripped the covers with one hand and held his head tightly to her chest with the other.
"Oh, Jack..." she cried. This only encouraged Jack further. He was pleased to be giving her this pleasure after what she had done for him.
Jack moved back up to kiss Kate again, but didn't let up his little circles around her swollen clit. He slid his arm under her neck and pulled her close to him. All the time maintaining the same motion inside her panties. Kate's body quivered as she made louder noises now. She wrapped her arm around Jack's neck and squeezed. She could feel Jack's hard cock pressed against her leg as her hips began to move with the motion of his fingers. This was way further than either of them had ever gone. This was further than she had planned going tonight, but her body was vibrating with new pleasures.
Jack move his hand around in a motion the take Kate's panties down. She grabbed his hand.
"I'd better keep those" she whispered.
"Why? I want you naked like me" Jack pleaded.
"I can't. It's just something...don't be mad", Kate said as she gently kissed him on the lips.
"I'm not mad. Not even close" Jack moved his hand back to Kate's wet slit. Her legs were more together now. He was sensing that he had blown it somehow. "Are you still, ok?"
"Yeah, it's just...will you hold me for a little while?" Kate whispered into his neck.
Jack moved his hand up her body and wrapped both arms around her. The feel of her warm soft tits pressing against him was amazing. He ran his hand through her hair and kissed her cheek.
"Thanks for today. This has been the best day of my entire life" Jack admitted.
Kate nuzzled in even closer to him and agreed with a soft moan. It was like she was coming down a little. Regaining something that she had briefly lost earlier. Finally, she spoke, "That was a lot of firsts today" then she giggled.
They laid there for a while. Kate was comfortable with Jack's cock pressing against her stomach, as he stroked her hair and bare back as they embraced. It wasn't much longer before they both heard the sounds of Amanda returning home. There was an audible sigh from both of them.