My wife and the Dildo

My marriage to Miho has been great except for one frustration. Being married to a sexy Japanese woman who sees sex with me as a chore. I tried everything I could think of to get her more enthusiastic. We watched a few porno movies and I noticed that she became very interested when a large cock would plow into a tight cunt. Even after watching this sex was still very uninspired.
One night I was looking for another video to try when I saw the dildos hanging on the wall. It was worth a shot I thought to my self. I bought an 8 inch jelly dildo that was at least 3 times my width. I rushed home and smuggled it into the bedroom.
When we went to bed that night I placed a blindfold over her eyes and told her that I had a surprise for her.
"Good" she said, but I could tell that she just wanted to get it over with. I stripped her naked and began a long session of foreplay, but not once penetrating her beautiful pussy, only teasing it. When I thought she was read I went and got the dildo. I applied copious amounts of lubricant along the entire length then rubbed the excess onto her pussy lips. Slowly I rubbed the dildo's tip up and down her cunt to let her know that something new was here. I waited for a protest, but she responded by breathing deeper. OK I thought, so I slowly began to insert it into her twisting slightly as I went. As it began to streach her lips and fill her cunt she began to moan. Softly at first, and louder as it continued in. Once all the way in I began to piston it in and out. "God Yes!!" she screamed. I was now in heaven. She had never been this vocal during sex. I picked up the pace and was delighted as I watched her toss her head from side to side screaming with pleasure. That night, for the first time in my life, I watched my wife spasam in a genuine orgasam.
The next day I asked her about what had happend. She just blushed and told me not to talk about it. Miho denied that it was special for her, but the dildo became a regular partner in our bedroom. After a few months I became curious if she was fantasizing about another man while the dildo pounded her. One night while rubber her clit with the dildo, I leaned over and whispered in her ear "Do you want to fuck HIM?"
"Yes" she grunted.
"Yes, what?" I prodded.
"I want to fuck him."
"It's not your husdband's cock."
Softly she whispered "I know." and then she thrust her hips forward and impaled herself onto the dildo. I was shocked by her response, but I was even more shocked by the arousal it gave me. I fucked her hard with "Him" and egged her on as she bucked madly. When she came I instantly threw myself into her. The thought of sloppy seconds with my wife drove me to almost instant orgasam.
She became very angry with me when I tried to talk to her about it the next day. I dropped the subject and have yet to bring it up again. "He" still fucks her and she writhes like a slut everytime.
Hopefully, as long as I have "Him" neither one of our fantasies will come true.