Sort of

"Why don't you turn over - I saw dad fucking you from behind, and I want to do that." He pulled his mind from hers to keep her from realizing what he had planned, leaving her in a state of receptiveness.

Lily rolled over, flipping her hair to one side as she raised up on hands and knees. "Are you going to spank me like daddy does?" she asked, grinning back at him.

"Not this time," Matt said, crawling on the bed behind her. He gripped her hips while straddling her legs, moving lower to rub the length of his cock along her shaved, wet pussy, pressing the head between her labia before withdrawing, the head of his cock spreading her fluids up as he pressed the tip against her asshole.

"Wait... wait a second," Lily said, looking back again. "Daddy never... I mean, I never..."

That was as far as Lily got before Matt shoved his cock forward, pushing past her sphincter and burying the head of his cock into his twin sister's ass. She cried out in shock and pain, and Matt pushed her head into her pillow, still pressing, strong and steady, until his entire cock was buried inside her recently virgin ass. She cried out again, grunting as he pulled most of the way out, then slammed back into her. Lily's tight body rocked forward, held up by Matt's hands held tight against her waist. Again and again he thrust, muffling her cries into her pillow until the sounds of pain changed to sounds of pleasure. He moved one hand from her hips to her long hair, yanking it back and pulling her head off the pillow as he pushed his cock as deep into her ass as it could go before his orgasm washed over him, his sperm filling his twin sister's ass. He collapsed on Lily's back, her hands and knees supporting both of them even as his cock continued to spurt, his hands going to cup over her breasts. "God, that was good," he whispered.

"Don't... you... ever..." Lily started. Then Matt connected to her mind again, changing her words. "We need to do this every night," she concluded, her asshole squeezing his cock.