Chelsea trembled in Jeff's arms. She did nothing to stop her brother as he kissed her shoulders, her cleavage, the palms of her hands. He just kept kissing parts of her body like he had a list to get through.
"Well, baby sister," Jeff finally said. "Everything is up to you. What happens with you, me, and our baby?"
"I'm not ready to be a mother yet," Chelsea said, her voice weak and trembling, as though trying not to cry. "If I... if I agree to be your lover, do you promise you can pause this pregnancy? I'm not ready to have your incest baby."
"I absolutely promise," Jeff said, and kissed Chelsea's nose. "If you and I can be lovers, you don't have to have our baby until we're both good and ready. Because I love you, baby sister, and I don't want to do anything that will make you unhappy."
Chelsea gave him the side-eye at that, but she remained limp and unresponsive in his arms. After several long moments, she nodded. "Then I guess... I guess we're lovers now."
"Yesss!" Jeff kissed Chelsea's lips, shoving his tongue into her mouth, though she remained floppy as a rag doll. "Thank you, Chelsea, you've made me the happiest boy in the world!"
With that, Jeff scooped Chelsea up like she weighed next to nothing, and carried her to his bed. He laid her down on her back, arranging her loose limbs carefully. He sat over her, stroking her breast, using his fingers to draw circles on her belly.
Chelsea didn't meet her brother's eyes. But he could feel the tremble in her body as, against her will, her arousal built up.
"How should we celebrate our new relationship, little sister? Should we just do it? Or maybe we could do a little more transformation to make it exciting."