Readying the Ring Finger

You spotted Karen outside the church. She was wearing a dress that was tight around her waist and hugged her curves. The neckline plunged low, and the skirt was so short that it barely covered her ass. She saw you looking at her and smiled. You could see the desire in her eyes. Her entire look screamed that someone at this wedding would be fucking her.

The fact that it would be her brother, the groom, would be a bit unexpected.

"There you are, come on - I need it now...", she moaned as she lead you into the church and into a closet.

"That's some outfit, Karen.", you said as she pulled you close.

"It serves two purposes - first it ensures you'll be able to see me in the church while I tease you like this.", she sensually licked her lips and you felt your already hardening erection jump. "Second it gives you easy access for this."

She took your left hand and brought it down near her waist, while pulling up her dress ever so slightly. The hem of the dress was so short that it barely covered her ass, and as she slid your fingers right into her bare pussy, you realized that she wasn't wearing any underwear. That thought was blasted away by how tight and wet your sister was.

You didn't waste any time using your finger to play with your sister, who for her part pulled you closer to her, shoving your face down into her cleavage while you finger fucked her. Her pussy was like a vice, gripping your fingers tightly as she pumped them in and out. The sounds she was making, deep guttural moans that were almost feral, the feeling of her breasts on your face, and the way her pussy was coaxing your fingers in and out was so erotic you actually found yourself on the edge of cumming, before she got her release. Soon she was coming all over your hand and arm, her body shuddering and thrashing in ecstasy. You were going to stop but she pulled you tighter against her, her nails digging into your skin as she rode out her orgasm.

"Again, again. I want your hand soaked with me. I want Sarah to be able to feel it and smell. Oh god, it'll be so obvious that you just fucked me with these fingers."

Karen urged you to keep going, and her moans got louder. You were afraid someone would hear, but somehow that made it hotter. You felt yourself cumming, and Karen felt you tense in orgasm.

Karen's voice was high and tight with excitement, her breathing coming in short gasps. "Yes, cum, Bill, cum for your sister. You'll be standing there before her with your cum in your pants because of me, and my cum all over your hand. Anyone would know you'd just been with a woman you wanted so badly you couldn't stop. But Sarah's so clueless, she probably won't realize how completely you gave yourself to another woman right before the wedding, oh god yes..."

At that moment, it was like the betrayal made your sister cum on your hand again. Her body convulsed and she moaned loudly, more intense than the last time. You went to remove your fingers, but she squeezed tightly with her vaginal muscles, trapping your finger. "Not so fast," she said, "I still need more."

By the time your sister had cum twice more you barely had time to get to the front of the church. Your sister took your soaked hand and licked her own cum off of it, leaving it slick with her saliva and love juices but not visibly dripping with cum as it had been. "I love the taste of myself on a man.", she moaned, causing you to almost shoot another load into your pants. You could smell her musky scent, mixed with the smell of sex and sweat, and it was almost too much to bear.