After the first successful session where I let Mark fuck Michelle while she thought it was me pretending to be him, I decided on a new twist.
Instead of leaving Michelle alone and going to my workshop so "Mark" could come in and fuck her, I told her that I had a new fantasy. Since she had enjoyed being serviced by Mark so much alone, I was going to pretend to invite him to come in and fuck her while I watched.
She was turned on by this fantasy and said she was ready to give it a try right away.
I went over new dialogue with her to make the new fantasy exciting and sexy.
When I had Michelle blindfolded, bent over the chair, and tied in place, I walked to the front door, opened it and said, "Come in Mark. I have a little surprise for you."
As we walked toward Michelle, I stepped quietly so that she would only hear one set of footsteps and said.
"Michelle has told me that she would enjoy being fucked by you, and you have told me over and over how much you lust after her body, so I thought I would surprise you both tonight."
That was the cue for Michelle's lines.
"James!!" She said sounding convincingly frantic. " That was just a fantasy. I can't believe you thought I was serious about letting Mark have his way with me while I am helpless like this."
I walked up to Michelle, lifted her skirt and placed it on her back revealing her sexy lace panties that were already showing dampness.
As Michelle struggled with her restraints and continued pleading for me to send Mark home, I stepped back far enough that she could tell from my voice that I was no longer close and said, "Mark, why don't you slip her panties off so you can get a good look at what is there for you to enjoy."
Mark hooked his fingers in the waistband of her panties and lowered them very slowly to her knees, exposing her ass and pussy to us both.
Michelle entreated, "Please, no. Mark, you should not be here! Please don't do this."
"Go ahead, see how she feels. I bet she is wet and ready for you." I told Mark as Michelle continued to struggle and plead.
Mark put a hand between her thighs and moved it upwards until it came in contact with her pussy as Michelle squirmed and stifled a moan.
He inserted a finger between her lips and Michelle froze as the finger slid deep into her pussy. When the finger was all the way in Mark held it there as Michelle continued motionless for a brief period, then moaned loudly.
When Mark began to remove the finger, Michelle tried to push herself back onto it.
She cried, "No, please don't take it out!"
Her restraints prevented her from following the finger back and Mark removed it as Michelle moaned and writhed.
"I would say you are ready for Mark to fuck you, wouldn't you Michelle?" I said, looking at Mark.
"Oooh, no. This is not right. You can't let him take advantage of me while I am helpless like this. Mark, please don't do this. Please go home." She begged convincingly.
"Hmmm," I said. "It seems like Michelle might not be sure what she wants to do. I have an idea for a way to decide. Let's have Mark put his cock inside Michelle and then she can decide if she wants him to go home or stay and fuck her. Go ahead, Mark. As wet as she looks, you should not have any trouble getting in, even with your big cock."
Michelle began to writhe and as she heard a zipper being pulled down (not knowing that it was Mark's, and not mine) she said, "please, don't. Not inside me."
She gasped as Mark put the tip of his cock against her pussy lips and began to slide it in.
"Oooh, please don't, mmmm." She begged and moaned at the same time.
"As soon as it is all the way in, you can decide if you want to continue or if you want him to leave." I said firmly, not leaving room for disagreement.
I signaled Mark to slow down and enter her gradually.
When he had penetrated her completely and his body was pressed tightly against her ass, I told Michelle that she had 30 seconds to decide if she wanted Mark to continue or to leave.
"I think he needs to leave. It is not right for you to let him take advantage of me like this when I am helpless and can't resist." Michelle said in a breathy voice, followed by a moan as Mark moved his cock inside her.
"You still have 25 seconds before you make your final decision, and Mark is going to help you make the right decision during that time." I said motioning Mark to start thrusting.
Mark slid his cock almost all the way out and then drove it all the way back in and Michelle moaned loudly.
"H h how much longer?" Michelle stammered as she tried not to react to Marks's cock moving faster and faster inside her.
"Almost done, 15 seconds." I told her as I watched her body start to respond to Mark's thrusts.
"Oooh, please... stop... I... I...mmmmm, please... Oh God." Michelle babbled as Mark continued to thrust inside her.