Married life brought a real lull to our sex life to the point where it seemed that my wife was doing it as a chore rather than with any passion. This made me feel inadequate as well as restless. I knew that I was a good lover and unselfish and my thick 8" cock was still performing well. My restlessness was making a strange part of me itch, namely my unexplored bisexual side. I had never really been attracted to men but the thought of a nice, hard, hot cock in my mouth made me hard and the thought of that cock pounding me hard up the arse set me alight and I would have to find somewhere to have a wank, either in the shower at home or the bathroom at work. I even had to use the toilets on the train one time.
I tried bringing up exploring some fantasies with my wife, mainly her own but she just would not speak about it. She had no spark any more and was letting herself go. Something drastic needed to happen. I encouraged her to start getting some exercise and to let our son be looked after for a couple of days a week so she could get some time to herself to go to the gym and the beautician. Within a couple of months, she had firmed up and her skin was radiant. Luckily for me her D-cup boobs stayed where they were. Her personal trainer Anthony was a boob man like me and he tailored her exercise so that it toned up her tummy, thighs and butt while improving her aerobic fitness.
So there she was, back to being a size 10 but now with a D-cup rather than the B-cup when we first met. She started spending more time with her gym friends which was good for me as I got to work on my PC at home and watch heaps of YouPorn clips. We also started making love a bit more regularly, every other week or so but they weren't the roll-on/roll-off affairs of months gone by. We actually would go for an hour of so and usually have 3 or 4 fucks during that. It twigged that she had been fucking someone else when she did something that she had never done before and would only have seen it a porno or been taught it by a lover. I had asked if I could cum on her tits and she was surprisingly happy to do it. I would usually just straddle her while she lay there and shoot over her luscious mounds but this time she got off the bed and knelt on the floor and pulled me by the cock towards her. She started stroking my cock while pointing it at her tits (first indicator) and then as I was about to come, she took her fingers away from her pussy (second indicator, she NEVER played with herself) and slowly slid a finger up my bum as I started to shoot a massive load. My sphincter contracted around her finger and I just about passed out from the pleasure and shock of my wife being into it when I came on her tits and playing with her clit and slipping a finger up my arse while I came.
After cleaning up a bit and having a cuddle I decided to broach the subject. "Honey, what was that about?"
"What was what about?" she asked, trying to act as if nothing was wrong.
"Babe, I've never seen you happy about me coming anywhere but your pussy before, you have never touched your pussy while in my presence before and you have NEVER played with my bum before. Lots of new tricks for someone who doesn't watch porn" I said, smiling at her. "If you are fucking someone else, tell me about it. I want to share and hopefully get your mojo back. So long as I am involved and this doesn't affect our marriage, I am cool with it if you tell me."
She bit her lip and tried to stammer out a fabrication. I told her it was lies and that I wanted the truth. She looked down at her feet and started to tell me about the affair with her trainer Anthony. He got hands-on with her training from the first day, helping her to do sit-ups properly and spotting her while she did weights. He would wear loose shorts and no undies and stand over her so she could see his cock while she did fly curls and bench press.
"So tell me about his cock," I said, with my cock getting bigger with every detail.