The Sister, Part 41

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Part 41

The bedroom was empty.

I let out an enormous sigh of relief when I saw that the hallway door was still closed and everything was exactly as I had left it. Of course, I could only relax so much. Natalie was still in my shower, and we were officially fucking behind my girlfriend’s back at this point. Even with a moment of solitude, and the recent realization that I no longer wanted this inappropriate fling to end, there was the persistent risk that came with what we were doing.

How many times had Natalie set things up so we were playing with fire? Committing to fucking me when Jessica was on the way up the stairs, making out with me while her sister was swimming just below, seducing me in the kitchen where we could easily be caught if we weren’t careful. All that moaning in the shower, too. I had to assume she was asleep, yet was still nervous about her swinging by while Natalie was here.

It didn’t help that my bedroom door couldn’t be locked. Wasn’t Natalie worried about my girlfriend letting herself in? Jess would probably knock, knowing her, though she might not wait for me to invite her in before opening the door.

I couldn’t deny that sneaking around like this was hot in its own right. Between that, and the fact that fucking Natalie felt amazing, I didn’t stand a chance. This was going to happen again. The only question was, could I manage to act normal around Jessica moving forward? So far, it didn’t seem like she suspected anything. And if-

Before I could start thinking more about how tomorrow would look like, Natalie stepped out of the bathroom. Naked as she had been for quite some time now, somehow looking just as hot with damp hair. “Hey, babe,” she said, with a smile and a slight tilt of her head, “Why are you wearing a shirt?”

Tank top, but whatever. Her own nudity contrasted my casual sleepwear either way. “It’s what I wear at night,” I hesitantly replied. Was she asking about that, or was she suggesting that we do another round before bed? As much as I appreciated the sight of her bare body, I wasn’t sure if I had another orgasm in me tonight.

“Well, I sleep naked,” she informed me, “And as my boyfriend, you should do the same. It’s only fair.”

Boyfriend? There was also the implication that she planned on sharing a bed with me, which was a terrible idea. Jess was a pretty early riser. I had no idea whether or not she planned on letting me sleep in at the lake; she’d probably leave Natalie’s closed door alone–I assumed it was closed, to avoid suspicion tonight–though she could easily slip into my room. Not for anything intimate, as she had made it clear that she didn’t want to do that when family was around. Of course, only one sister had that issue. But this was a new setting for me and Jessica. I could see her waking me up for breakfast, or a walk, or any number of things she liked to do here and wanted to share with me.

Just like that, the guilt was back. I was in here with a naked Natalie, while my girlfriend was sleeping just down the hall.

“Natalie-” I began, only to get cut off.

“Pretty please?” she pouted. Slowly stepping forward, keeping her eyes trained on mine, she said, “You love me. You think I’m better. Or did you just say those things to get into my pants?”

Fucking brat. I said those things under duress, and all of it was prompted by her. She was blatantly twisting the facts, when we both knew the truth. The only reason I was lusting after her was because she had been actively flirting with me and seducing me since she arrived.

Going on when I didn’t reply right away, Natalie said, “Babe. A naked girl wants to sleep with you. Are you really complaining?” Now standing right in front of me, she placed both of her hands on my shoulders, leaned up, and gave me a soft kiss. Pulling back, looking content with herself after I ended up reciprocating, she said, “How about this? I’ll wake you up by going down on you. And I’ll take a ton of nudes for you on your phone. All you have to do . . . ” She ran her hands down my chest, to my stomach, until she was gripping the hem of my shirt. “. . . Let me strip you. And tell me that I’m your favorite.”

As for the former, she didn’t wait for an answer. Instead, she merely began pulling the tank top up, taking my silence and the eventual lifting of my arms as agreement to the terms. Everything else was all kinds of enticing. Jessica had never really been into nudes, which made this yet another element that set Natalie apart from her. And her offer to start the morning like that? Fuck me. I did want that, despite how I had recently resolved to somehow reset all of this after a good night’s sleep.

Natalie tossed my shirt aside, then leaned forward to rest her bare chest against mine. “What do you say, babe? Am I your favorite?”

Favorite what? Not that it mattered. Whatever I said to Natalie didn’t really count; she was the one dictating the words, and we had literally just met. This was just like telling her ‘I love you,’ when I barely knew her.

Finding it easier to justify this and that along the way, I nodded. “You’re my favorite, Natalie.”

“I know,” she quietly giggled, “That’s why you want me to spend the night.” Looking up at me with those deep eyes, effortlessly demanding my attention with her ‘innocently’ flirty expression, she said, “Since I’m all yours for the whole week, I’d say that makes me your girlfriend. Don’t worry, I don’t mind that you’re fucking my sister on the side.”

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