Hold firm.

You rebuff her again and leave her alone in the kitchen as you head upstairs. The four of you spend the day walking around town, before having a late lunch at the local beer brewery. You and Steven remain there for most of the afternoon, sinking beers while Rebecca and Gemma head off to do some shopping. You head back to the house and relax, noting that the weather is much better tomorrow to go down and enjoy the beach.

Later that night you retire to bed, and Rebecca falls asleep beside you immediately. You lie in bed for about half an hour, trying to get to sleep, when you hear your door open. You turn on the lamp on the bedside table, only to see Gemma walk into the room dressed in a bathrobe.

"What the hell are you doing??" you whisper, daring not to move.

"Don't worry," Gemma says, closing the door behind her and walking up to the bed. She shakes Rebecca firmly, but does not rouse her. "Rebecca was saying she's been having trouble sleeping all week, so I recommended some extra powerful sleeping pills."

Gemma crawls onto the bed over the top of your sleeping wife, and pulls out a bottle of oil from the pocket of her robe. She tosses the robe onto the floor, revealing her naked body underneath, and turns around on her elbows and knees, presenting her pussy and ass to you, then uncaps the bottles and slides the tip into her asshole. She squeezes the bottle until oil starts pouring out of her ass, and when she pulls it out you see thin dribbles running out of her puckering sphincter. She tosses the half-empty bottle onto the floor next to her robe and turns around to look at you.

“Come on," she purrs, waving her ass in your face. "Destroy my ass.”