I suddenly realized how badly I had to pee. I’d needed to go when I came upstairs but had been so distracted by the sensual interaction with Mistress Isabella that I’d ignored my bursting bladder.
“Mistress, I….”
She yanked the leash and pain flashed in each of my nipples and I felt the collar tighten around my neck as I lurched forward, nearly losing my balance.
“I’m in charge girl!” She said. “Do as your Mistress tells you!”
I nodded, straightening back up, and reached down and tugged the fabric of my soaked panties to the side.
The room air felt cool against my wet lips, and I bit my lip to keep from moaning.
“Spread your lips girl.” She hissed. “Hold them apart so Mistress Isabella can see your filthy slut hole!”
I did as she asked, feeling how slippery my lips were, and fighting my impulse to push my fingers inside myself.
She shuddered and began to hump against the bed, staring up at my swollen opening. I felt a spasm move through me, and I clenched my legs in response to the tingling sensation inside me.
“Hold still!” she commanded. “I want to watch your needy hole while I cum.”
I nodded, feeling need throb within me.
“I’m going to cum.” She gasped. “Watch me fucking cum!”
I held my eyes on her face, trying to memorize how beautiful she looked as she fought to stay ahead of whatever was welling up inside of her.
Her eyes were darting back and forth over my body, and I felt oddly proud and aroused, and anxious to see the culmination of her masturbatory build up.
“Are you ready girl?” she asked, with a faraway look in her eyes. “I think I’m going to cum!”
She then sat up, her entire body tensing up as she drew in a deep breath.
“Noooooooooooooooooooowwwwwwwwwww!” she screamed.
She was lurching on the bed, her hips humping against the mattress as she reached up and wrapped an arm around one of my legs, her entire body vibrating as she tipped over the edge.
“I’m cumming! I’m cumming!” she grunted.
She looked up at me, and I obediently watched her face twist with pleasure as her body was wracked with spasm after spasm of release.
She dug her fingernails into my thigh and pulled at the leash until I had tears in my eyes, my body responding to her hip thrusting back and forth as she moaned and rode through her orgasm.
I felt something tighten in my belly, and I bit my lip to try to stop the sensation, knowing that I’d be unable to keep from crying out if it continued.
She spasmed against me one final time, and then pushed me away, rolling to the other side of the bed and turning her back to me.
I was breathing heavily and trying to process what had just happened. She had obviously had an orgasm, and I suspected my own body had almost done the same while we were clenched together.
Even now I could feel my hole clenched tight, hot and wet and wanting my finger to probe it worse than it had ever needed anything.
I wondered what she had planned next, and if my own body was about to work through the same sort of explosion that I’d just witnessed.
“Did you like that girl?” she asked, her voice steady and startling in the sudden quiet.