You hear a noise - go check on your brother

The dreams come fast and vivid—his weight on you, his cock driving deep, the hot rush of his release flooding you until you're overflowing, your belly already rounding with proof of what he's done. You wake gasping, sheets twisted around your legs, pussy clenching on nothing, soaked and aching.

You hear a loud moan through the house, waking you up. You sit up, heart racing. The clock says 2:17 AM. The house is silent now, but you're sure you heard your brother call out. Your body is burning up—a physical craving that makes your hands shake. Just go check on him, you tell yourself. Make sure he's okay on the couch. That's all.

But you know it's a lie.

You slip out of bed, barefoot, wearing only the loose tank top and a fresh pair of panties—and a wool bathrobe. The hallway is cool against your flushed skin as you pad downstairs, each step making your thighs rub together, sending little sparks through your core.

He's on the couch, blanket kicked half off, one arm thrown over his face. Moonlight cuts across his body, highlighting the ridge of his erection straining against his sweatpants. He seems to have vivid dreams, too.

You stand there for a long moment, breathing shallow, the internal war raging one final time. Turn around. Go back upstairs. Lock the door. Your eyes are engrossed looking at your brother's bulge in his pants. If you do this there is no going back. You will stay like this!

But your body moves forward instead...