Stick it in her ass!

Just the thought of it is enough to convince you. You slide your cock back out, this time exiting completely. You watch as Olivia's body wriggles a bit, surely waiting for your return. You reposition yourself, moving up to her second nearest entrance. As wet as she was, you have no need for lube, you press your cock between her cheeks for only a moment before shoving yourself in.

"Grrrhhfff!" You hear come from Olivia. You can't tell if it's derived from pain, pleasure, or anger, though all three is also a possibility. You don't focus on it much though, as you enjoy the sensation of your cock squeezing through the tight space. This time you slow your motions a bit, taking in the whole experience. You slowly keep sliding until you feel your balls tap against her. You begin to pull back just as slowly, you want this feeling to last forever. On your second time in, you speed up slightly, pushing it till you can't go any further. With each thrust you pick up the pace, you can feel your cock's tight confines stretching with every one. You continue to hear Olivia making low muffled sounds, they're not quite moans but you are no longer in the head space to try to intemperate them. You keep going, pumping in and out of her ass faster and faster. You've never felt this good before, your hips begin to move wildly, the tightness no longer hindering your speed, as you thrust again and again the intensity building with every movement, you keep going slamming full **** into her until you can't take it any more. With one last thrust, you feel yourself explode inside of her.

With a deep breath, you collapse on top of her. Through your panting you can feel the smile that won't leave your face. You take time to catch your breath, you hold yourself inside of her for a moment before standing back up and slowly pulling out. You watch your cum dribble out as your cock is fully freed.

As you begin to come down from your anal sex high, you start to pay attention to Olivia, still bound and helpless, her hips are shaking even more than they were before, her body twitching and wriggling. weather she wanted you to do that or not, it's clear that she is turned on, and could probably use some release of her own.