Hearing those words made Amara's heart skip a beat. Her body shook from the impact of his thrusts, and she felt lightheaded.
But she somehow managed to keep her gaze locked onto him as her eyes widened and her lips parted.
"Yes! I know... but it just happened... I'm sorry! I won't do it again! I promise! I'll only have sex with you... Only you... Please forgive me!" She cried out.
Her words filled him with excitement, but they also made him feel guilty. He didn't mean to put such a restriction on her. It was just... when she told him that, he suddenly felt jealous.
Like his blood boiling as if some strange force had possessed him, and he needed to make sure that Amara was his and only his.
That feeling just didn't go away. And instead of lessening, it kept intensifying as he fucked her over and over again.
Oliver didn't want Amara to think that he was mad at her, so he leaned over to capture her lips and kiss her passionately.
His kiss was deep yet tender at the same time, which made Amara melt under his touch.
The way their tongues danced together felt heavenly to both of them.
Oliver slid his hands along Amara's smooth skin while devouring her mouth, his thrusts becoming more passionate than forceful as his emotions poured out in each kiss and thrust.
Amara felt like she could come any second as she savored every sensation that coursed through her body.
Every touch.
Every kiss.
The sound of his heavy breathing.
The feeling of his lips.
The taste of his tongue.
The sensation of his hard cock plunging into her wet hole.
The warmth that spread across her body with every motion.
And all of it felt so wonderful that she was unable to resist the pleasure that overwhelmed her mind.
She cried out as she came hard, her body quivering from the powerful orgasm that overcame her.
And before she could recover from her climax, Oliver exploded inside her as well, filling her womb with his hot cum.
Her walls tightened around his dick, squeezing him hard and forcing him to pour a large load of thick semen inside her, giving Amara more than enough reason to come again right after the first time.
"Aaaaahhh!! Aaahhhnn! I can feel it... so much of it... pouring in me... I love you... my brother... mmnnn... uuhhnnn..."
Amara's moans echoed throughout the room, accompanied by the sound of Oliver's ragged breath.
For several moments, their bodies remained motionless. Neither of them said anything, each lost in their own little world of bliss.
The silence was broken when Amara opened her eyes and spoke.
"What got into you today, bro? I mean, your lovemaking has always been... amazing. But today you were more aggressive than before. It was incredible. But it's unlike you."
Oliver chuckled as he lay on top of her, his softening penis still buried in her pussy.
"I don't know myself, honestly. I just felt possessive all of a sudden, wanting you all for myself." He paused for a few seconds, his mind racing for a few seconds before continuing, "Is it... jealousy? But I never minded other guys having sex with you or anyone else. Why does it feel different this time?"
His response made Amara giggle. "Maybe it's just love~. Because you truly love me."
"Hmm. Maybe. But I have loved you ever since we were kids. So why only now...?" Oliver asked himself, still puzzled.
Seeing how serious her brother seemed, Amara stroked his hair and said, "No matter what the reason might be, I'm not complaining at all. In fact, I like this possessive side of yours. It makes me feel even more loved." She kissed him lovingly. "I want you to feel free to go crazy anytime. I'll always be ready to accept anything from you, my darling brother."
Oliver smiled at his sister's affectionate gesture and expression of love. It warmed his heart, filling him with joy and happiness.
Then, he suddenly realized that this was not right. Amara was still his sister after all.
Even though he already knew that she loved him just as much as he loved her, Oliver also felt like he couldn't take their relationship beyond the limit of their bedroom.
Otherwise, things would definitely go out of control and end up becoming a scandal.
Not just for themselves, but also because his new status and the fact that they were related by blood would ruin everything for their family.
When Amara saw his smile falter and the joy leave his eyes, she frowned, wondering why he stopped looking happy.
She then thought about what she said earlier, and it dawned on her that he must have been worried about what the future might bring after what she said about wanting him to possess her without limits.
"Hey, I know what you're thinking, bro. Don't worry, it won't become a problem between us, even if we become a couple openly."
Upon hearing Amara say those words, Oliver snapped out of his daze and stared at her in confusion.
"What? How...? I don't get it."
"Simple. I talked to Mom and Dad about it before I came here. About creating a new identity, where I'm adopted into their family instead of born into it. A new history that can make you and me become legal lovers without worry."
Amara flashed an encouraging smile as she wrapped her arms around Oliver. Her eyes sparkled like beautiful sapphires.
And those beautiful eyes filled with love, desire, and hope made Oliver unable to resist the temptation to kiss her once again.
After their lips separated, Oliver cupped Amara's cheeks and caressed them gently. "That means we'll be together for the rest of our lives, won't we?"
Amara nodded and blushed. "Of course we will. Forever."
"And what about your boyfriend? Did you break up with him?" Oliver asked, suddenly remembering that Amara already has a boyfriend.
However, Amara responded with a reassuring tone. "Don't worry. We already broke up. But let's not talk about him anymore. I don't care about him since I have already decided to belong to you, my brother, Oliver."
And with that said, the two of them sealed their vow with a kiss, sharing a deep, passionate kiss that left them both breathless afterward.
And as their tongues danced together in harmony, Oliver couldn't help but think about the reason why he started feeling so possessive.
'Why? Why am I feeling so much possessiveness? Could it be... because of the effect of the drug?'
Oliver remembered how his grandfather, William, administered him a drug that supposedly made him able to impregnate his relatives without consequences.
'Did that drug have this side effect as well?' Oliver thought to himself as he continued kissing Amara, letting her moans drown his senses.
'It could be. After all, it is a drug created for the sole purpose of impregnating the blood-related women. But would the desire be so strong to the point of feeling this intense possessiveness?'
However, Oliver soon realized that it didn't make him want to possess his aunt Anna, who was the one he slept with last night.
'Hmmm... Too many questions, but not enough clues... Maybe I should ask Grandfather for details, after all.'
But then again, this was not the time to think about the reasons; instead, the two of them would make sure to enjoy and indulge themselves in the desire of each other's love, passion, and lust.