That evening as Megan was getting ready for bed, the memory of what had happened in Terry’s room invaded her thoughts, and it got her excited. She crawled naked under the sheets and once again directed her fingers to slowly enter her already wet pussy.

She closed her eyes and recalled the feeling of Terry touching, kissing and then licking her breasts as she masturbated. In her mind’s eye she envisioned him in bed and jerking off into her black silk and lace panties and that increased the speed of her fingers against her clit. That mental picture combined with the fact that he was thinking about her as he stroked his hard cock pushed her over the edge quickly. She was forced to bury her face in a pillow so her orgasmic cry did not wake anyone.

She didn’t feel guilty about what had happened between them, as they were related only through the marriage. If they had met before her parents got married, she would have invited him into her bed with no hesitation.

She had been without a lover for quite a while as the last few were serious disappointments. Minimal kissing, no foreplay and no desire to experiment. Even her most erotic lingerie were ignored; it was quickly removed so they ram themselves inside her.

She had been in a self-imposed celibate state for a few months and was surviving until she realized that she had been missing and craving a man’s touch. Terry seemed to be the solution.

He was attractive but shy and based on her experience was probably a gentle lover. Not like that was likely to happen as he was still embarrassed at being naked in front of her. She forced herself to sleep as she had housework in the morning and 7:00 am came awfully early.

Over breakfast their parents informed them that they were going out for the evening and Dad was in the process of repeating the rules, but Terry and Megan beat him to it by reciting them in stereo.

“No parties, no drugs, no alcohol and above all, no guests of the opposite guests.”

After breakfast, Megan began her laundry chores while her mind was racing ahead to what she had planned for this evening. When she then heard Terry’s motorcycle start up and pull out of the driveway, it was an effort not to run upstairs and find out where he was going.

“Terry left?” she asked, pouring herself a cup of coffee

“Yes, he volunteered for an early shift. He must have some plans for later this evening,” Mom responded.

Megan smiled inwardly. His leaving early meant that he’d be back early, so she returned to her chores and finished her work in record time. Mom and Dad left about an hour after Terry did, and so with the bathroom now free she headed there.

She took a good long hot shower where she washed her hair and shaved her legs afresh. She also trimmed her pubic hair into something she had seen in one of her Dad’s Penthouse magazines. After she applied her make up, she rummaged through her collection of nighties for the sexiest one she could find. She then tore through her lingerie drawer searching for another pair of her sexiest panties.

She then placed a note on Terry’s door for him to take a shower and then text her when he was ready.

It was about 4:00 pm when she heard his motorcycle come up the drive. She listened for the sound of him moving through the house and then pausing at his bedroom door. After a few minutes, she heard the shower come on and she knew he was getting ready. It was an effort not to get excited.

It was about twenty minutes later that her cellphone chirped and she saw the text massage telling her that he was ready.

The door to his room was slightly ajar so she entered. He was already naked under the sheets and judging by the outline she saw, he was already rock hard. His eyes went wide when he saw the shorty nightie Megan wore, it was purple silk with black lace trim and fit her like a glove.

He also noticed that the nipples of her beautiful B cups were already straining against the fabric. Like yesterday, she stopped and did a pirouette to show him that this time she wore a thong of the same color.

She then slid under the covers next to him.

“Do you like to experiment?” she asked in a low voice.

“Yes.”

“Good. Slip these on.”

In her hand was a pair of hip-hugger panties in chocolate brown. They were even softer and silkier than the black ones he had borrowed.

“Megan, I am not a cross dresser.”

“I know, just please put them on.”

He took the offered panties and slid them on under the sheets and marveled at how great they felt against his skin. They did not fully cover his erect cock and the tip protruded from under the waistband. Megan once again slowly peeled back the sheet and the sight of the head of his cock peeking out from the waistband of her panties got her really excited.

In a flash she straddled him and lowered herself until the moist crotch of her thong met the outline of his cock that was a prisoner of her silky underwear. Megan then began to move up and down the length of his shaft. The sensation was beyond belief to both of them.

“Oh Megan, that feels so good.”

“Terry, touch my tits.”

Terry slow slid the spaghetti straps from the top of her shoulders and the nightie fell to her waist revealing her firm and lush breasts. He then ever so gently began to rub his hands over both of them.

“Kiss and suck on them,” she moaned softly.

Terry applied gentle kisses all over them before moving to the nipples. Once there his tongue licked each erect nipple and once satisfied they could grow no more he gently sucked on them. Her moans grew louder as continued his ministrations.

She pulled her chest away from his mouth and lowered her head to gave his nipples the same treatment that she received. She stopped and sat up staring him in the eyes momentarily before she lowered her lips to his and gently inserted her tongue into his mouth.

The gentle kissing only lasted a moment and soon they were sucking each other tongues and lips in a heated erotic frenzy.

“Megan, I want to fuck you so bad I can’t stand it,” he managed to say between kisses.

“Really?”

“Yes really.”

“Not shy about being naked in front of me or the fact that I am your step sister?”

“Not anymore.”

“Do you have protection?”

“Yes.”

“Then fuck me as hard as you can.”

Terry rummaged through his nightstand drawer and produced a string of condoms. He didn’t even bother to remove the panties and simply slipped the waistband under his aching balls as he slid the latex sleeve on. He then gently placed Megan on her back and pushed her legs apart and slid her thong aside.

He inserted just the head of his cock into the opening of Megan’s pussy and held it there for a moment until Megan begged him to fuck her. Terry then slowly inserted himself into her hot and dripping flesh.

“Megan, your pussy is so hot and tight.”

“You made it that way. Now fuck me.”

Terry began to slam his cock into his step sisters box as hard and fast as he could. Her moans told him that he was doing exactly what she wanted. Megan suddenly reached up and looked into Terry’s eyes.

“Terry, I’m gonna cum but I want you to help me.”

“How?”

“Tell me to cum.”

“Come for me Megan. I want to hear you cum,” he repeated over and over in her ear.

Megan’s legs moved to his lower back and she wrapped themselves around him and squeezed as she let out a long and ecstatic moan as she came. Terry felt her inner muscles grip his shaft and the heat seemed to increase and he also had an orgasm.

They cuddled under the sheet for the longest time, exchanging gentle kisses.

“That was fantastic,” Megan said.

“Yeah it was,” Terry responded.

“And we have all night ahead of us.”

“I can’t wait.” He gave Megan a long lingering kiss.

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