Sliding off the mare, you feel a sense of...power. Strength. It was there before, when you mounted the other mares earlier, but it's becoming more obvious, more...alluring. Your fists clench at your sides and you grit your teeth, your horse cock barely having a chance to soften before the freshly-fucked mare is prancing in place, smiling and cupping her enlarged breasts. She smiles at you with lust.
"I'm sorry I was being a bitch," she looks up at you sincerely. "I had no idea it would be so...." she pauses, tears of happiness in her eyes. She throws her arms around your neck and buries her head against your chest. "That was the best thing I've ever felt. Please...let's do it again soon."
You nod, patting her head affectionately as one of her forelegs rubs seductively against yours. You grit your teeth in arousal, feeling your horse cock slap against your underbelly. You growl, in a deeper voice than you thought you possessed.
"Another." you mutter to the other centaur.
"Pardon, brother?" he says, coiling the ropes that had bound the mare.
"I want another." you say with calm precision. The other centaur grins broadly and turns to the crowd, lifting his arms.
"He wants another!"
Gasps and cheers meet his announcement, and he holds his hands up for silence. The mare in your arms smiles at you, and you pat her cheek and give her rump a little slap as she trots into the eager and congratulatory arms of a group of mares.