As it turned out, I didn't tell him why he was locked for a month.
When I returned home I told him we were both locked for a month. He didn't question why and I didn't offer up that I sacrificed his orgasms for my own.
I thought I would feel guilty.
I didn't.
After passing out on that last orgasm I would offer to keep him locked for a year if I could feel that way again.
After all he had asked for this, I told myself.
The month passed slowly.
We were both going out of our minds with hornyness. At least I still had access to my tits, although whether this made it better or worse I couldn't tell. All he really had was his ass and he wasn't quite ready to take that step. Not yet.
The final Sunday found us outside my Mistress's door. I was on my knees ready to kiss her boots. My boyfriend stood not sure of his place.
The door opened.
Mistress stood there in a black latex catsuit with a red corset. Six inch heels on thigh high boots. Her hair was pulled back in a severe ponytail.
I kissed her boots then crawled past her.
Looking at my boyfriend she said "You will learn." And shut the door in his face.
I was naked and secured to the wall before she returned to the door.
My boyfriend was still standing there when she opened it, but quickly dropped to his knees and kissed her boots.
"Better, now crawl slave and follow me."
Shortly she had him naked and bound to the wall directly across from me. She then removed his cage. He moaned.
"Hush slave, or you will get nothing more from me."
Next she came to me, a gag, my gag, in hand. It was a dildo gag and I wanted it, needed it. She strapped it in place as she spoke.
"You will be silent for now, suck on your pacifier, while I question your boy toy."
I did, sucking for all I was worth and wishing her fingers were touching my clit.
She smiled as if she knew what I was thinking, and turned on her heel, walking back to her newest slave.
"How was your first month as a chastity boy? You may speak freely"
He gasped as she grabbed his cock.
" Hard Mistress, intense, exhilarating, but I need to cum." He replied in a horse whisper.
She laughed.
"Did she" pointing at me, " tell you why you were locked for a month?"
I stopped sucking, then resumed even harder, knowing I was in trouble.
"Nnno Mistress."
"I offered her a choice, " she said with a laugh, eyeing me. " She could cum but it would cost you a month of freedom."
He looked up at me, a flare of anger in his eyes.
"Oh don't be mad, she needed it, besides I will give you the same choice soon. We will see how chivalrous you are."
She resumed stroking his cock. Pre cum formed at the top, she took it on her finger tip and rubbed it on his lips.
"Lick it off" she ordered.
He did with a look of disgust.
"But you will have some further tasks involved before I let you cum."
With that she let his cock drop and returned her attention to me.
She unlocked and removed my belt. Unclipping my arms she told me to go wash and shave my pussy, as I had every weekend for the last month.
When I returned she again locked my arms to the wall. From the shelf she took a vibrating egg and slid it in me. The remote for it she put in my boyfriend's bound hand.
"I have some calls to make, I will be back when I'm done. You, boy toy, can control her torture with this, but don't let her cum. If she does, you will be locked back up for three months before I give you another chance. Got it?"
Wide eyed by the threat he said. "Yes.... Mistress."
I jerked in my bondage as the toy sprang to life.
Mistress laughed and left the room.
Drool was dripping down onto my breasts, and my breath, already hampered by the gag, was coming in ragged fits. I should have been embarrassed, but I loved it.
"You bitch!" He said quietly "you got to cum?"
I couldn't reply, even without the gag I couldn't form words right then.
"Please" I thought, "Just a bit more." I wanted to cum even if it cost him three more months.
The egg stopped vibrating.
I looked at him pleading.
"No," he laughed harshly. " Nothing for you, I get to cum today."
I pouted, but it was only fair.
He had brought me to the brink about 5 times before Mistress returned. I was desperate. My chest and thighs were soaking wet.
"Ok, are you ready to hear the terms of cumming?"
He nodded.