my boyfriend’s sister and I “experimented” in his bedroom

My boyfriend’s family is super close, so I’m over all the time. His sister has been my low key crush since I met her. We flirt in that “is it joking?” brushing hands, compliments that linger, changing in front of each other when I sleep over.

Last weekend we’re all at their parents’ house. Boyfriend runs out for pizza, parents at the neighbor’s. It’s just us in his old bedroom “looking for his yearbook.”

Door shuts. She sits on the bed, pats the spot next to her.

“Truth or dare?”

I pick dare.

She smirks: “Kiss me. For real this time.”

I do. Soft at first, then deeper, her hand sliding under my tank, mine in her hair. Next thing I know tops are off, bras gone, her mouth on my nipple while I’m gasping into her pillow that still smells like my boyfriend.

She pushes me back, peels my shorts off slow, fingers tracing everywhere she’s been staring at for months. Slides two inside me easy I’m soaked curls them perfect while her tongue circles my clit.

I come fast, legs shaking, biting the pillow so hard I leave teeth marks.

My turn.

I flip her, yoga pants down, no panties (she planned this too). She tastes sweet, thighs clamping around my head while I lick slow, then faster when she starts whispering my name.

She comes hard, back arching, hand fisted in my hair, moaning loud enough I have to cover her mouth.

We’re scissoring five minutes later, slow and grinding, eyes locked, sweat mixing, both coming again quiet but intense.

Boyfriend’s car pulls up outside. We scramble, clothes on in seconds, hair fixed, faces flushed.

He walks in with pizza: “Find the yearbook?”

We just smile, thighs still trembling.

“Something like that.”