It's the middle of the semester and my wife and I recently switched gyms. Prior to the move, us going together was fairly sporadic but with the new gym we had a trustworthy child care and more convenient proximity to work, allowing us to meet up during our lunch break to lift.
We are both early 30's and the average age of the gym was early 20's. Even so, I immediately noticed I was still in the upper echelon of the male section (to date, I've only seen 4 guys bigger than me) and she is still in the upper echelon of hotness for the females. The very first day, I saw no less than six guys look at her with nothing short of animalistic lust and, as always, she was completely oblivious.
A little about my wife, she is amazingly attractive. She has very large mounds of happiness on her chest, a very spankable rear, and one would not be able to tell we have a toddler based on looking at her. Everywhere we go together she gets numerous looks and never even notices, yet no one ever approaches her; if they did, they would find a bright and beautiful personality to match the rest of the package.
The first weeks at the gym, I noticed an immediate change. She was overtly checking people out, both guys AND girls. We had this fantasy of her playing with someone else but I had basically given up on it until I saw the overt eye-raping she gave some of the guys. As time went by, she began to wear less and tighter clothing, apparently keying in on the visual attention she was getting and rapidly getting sucked into the "Gym MILF" train of thought. I was greatly enjoying it.
One night, we were lying in bed and I brought up the lustful gazes I was seeing. She seemed momentarily taken aback until I told her it was pretty hot. We talked for a bit and I asked her what she would do if one of those big guys got on the treadmill next to her and struck up conversation. "I would converse," was her response. I asked what she would do if he asked her to eat and she said she would text me and ask if it were ok. Hiding my bulge, I then asked, "What if the little meal date went well?" Her response surprised me completely out of my boxers... "I would send pictures." In the blink of an eye I had her pulled on top of me and found she was as wet as I was hard. Within a few minutes we were an exhausted heap on the bed.
Our gym dates continued for a couple of weeks, meeting up two or three days a week to lift. Occasionally, she would go in the evening without me. Being that I was getting six or seven days a week and my PhD is in Exercise Physiology I of course encouraged it...not to mention her libido was climbing rapidly. I would sometimes fantasize about her playing with someone but figured it wouldn't happen because she is rather shy and it's way outside her comfort zone.
...
It was toward the end of the semester and my parents decided to visit. I brought up the idea of them watching our baby so we could go lift and my wife seemed initially hesitant...curious. They agreed before she could respond and our plans were set. We changed to go and got on our way. One thing I had noticed recently was that when she went at night she had started to be more revealing in her attire. This night she opted for the then-popular 'booty shorts', a very loose fitting tank that allowed me a view of her toned back and shoulders, and a very sexy sports bra.
We arrived at the gym and scanned in. I had to drain the main vein so I went back to the locker room to do that and put my stuff in the locker. When I walked out I saw her smile very warmly as the biggest guy in the gym came up and gave her a two armed hug...she seemed to melt into him. I mentioned previously that I'm one of the 'big guys' there, but this guy dwarfed me. He was easily over six foot and probably outweighed me by a good 50 pounds, also boasting pharmaceutically enhanced musculature much like mine. As they ended their seemingly long embrace, his hand lingered on her lower back momentarily before excusing himself to the treadmill.
I waited a short bit for her to walk back to the racks and then walked over, acting as if I saw nothing. I now realized why she had started coming to the gym so much in the evenings. We hit a very hard leg workout but I must admit I held a very strong isometric contraction of one very specific muscle for the duration of the workout. As we were finishing, the beast came up to say goodbye and seemed slightly surprised by my presence. He introduced himself as Aiden and we chatted; my wife seemed slightly uncomfortable at first. What had these two been up to?
It was dark when we left. On the way home I pulled over to a dimly lit park and got out. She asked what I was doing when I opened her door and I simply said "Your shorts, lose them." Surprisingly, she got out and bent over her seat and I found her to be very ready. We had a quickie at a public park and went home to relieve my parents of baby duty.
Laying in bed that night she told me about their interactions, jokingly referring to him as her "gym boyfriend"...or at least I think it was joking. She said they always stopped to chat, he showered her with complements, and he had been trying to convince her to workout with him but she felt the flirting was far enough. I asked if she wanted him and after a long silence she responded meekly, "...yes." With that we made love yet again and as we laid there falling asleep I told her she should try working out with him.
...
One night, she came home from a late workout, drug me into the room, and took charge. At first I thought it was just sweat but she was the wettest I've seen in a good while. She drug my clothes off aggressively, took me in her mouth for a few minutes, and then pinned my arms down as she angled herself onto my cock. She rode me hard until she came and then without a word got off and took a shower. I finished myself off and laid there confused.
After her shower, she came out and laid down with me. We started watching TV for a bit but I could tell she had something on her mind. I decided to play it quiet and wait. About 30 minutes into Iron Chef, she muted the TV and ask "Were you serious?" to which I asked "About what?"
