Movie time

"How about we watch a movie in the living room? she suggests. You nod in agreement, both of you heading towards the living room. As you settle onto the couch, Caitlyn picks up the remote and starts scrolling through the options.

Caitlyn smiles at your question, her eyes lighting up with nostalgia. "Back to the Future is your favorite, right. I mean, who doesn't love a good time travel story?" She presses play, the familiar theme music filling the room as the opening credits roll. As the movie begins, you find yourself relaxing into the familiar rhythm of the plot, the laughter and excitement of your step-sister bringing a smile to your face.

As the movie progresses, you notice Caitlyn's attention starting to wander. She keeps glancing over at you, a mischievous glint in her eye. Caitlyn shifts on the couch, her bare thigh brushing against yours. You can see the outline of her bra, the soft curves of her breasts barely contained by the delicate lace.

She glances at your crotch, then back up at your face, a knowing smirk playing at the corners of her lips. Her fingers drum against the couch cushion, drawing your attention to her long, slender digits. You feel the heat rising in your cheeks as you realize the direction of her gaze. Your penis is hard, straining against the fly of your jeans.