Hi Mike,
What leaps out of this for me is something that has been touched on by a few other members, which relates hugely to the 'quality' of the sex that occurred with the gym monkey. I totally 'get' that you have some issues about yourself and your 'size'. I think that is a consequence of a lot of what goes on in the media.
Unfortunately, we live in a world where some pretty peculiar or exaggerated body shapes and proportions can be held up as some kind of 'ideal'. If aliens were to watch a lot of porn, they would get a somewhat skewed idea of what human beings look like.
The women would be primarily blonde, hairless below waist level, with large fake breasts. The men would all look like they lift weights for a few hours a day, and be equipped with genitalia more suited to drilling for oil than lovemaking or procreation.
And yet, if you look around any shopping mall, how many 'real' people look like that? Not many. So does that mean that the vast majority of people have mediocre, unsatisfying sex lives, because they do not look like exaggerated cartoon sex machines? Of course not! Real life is not a porno movie.
Great sex can be had between people who love each and have feelings for each other, regardless of whether they would pass the casting call to appear in a porno movie. You seem to be very 'down' on yourself about your dimensions. Seriously, my friend, don't be.
If a woman was to assign worth or value to a man based on the size of his dick, she would not be a woman worth knowing. In fact, she would have mental problems. The same would be true about a man who obsessed about breast size, and who felt that busty women were superior to less 'chesty' women. A person who thinks along those lines would be a terminally shallow individual, wouldn't they? Any sensible person would ditch someone like that, not try to please them. So take some time to ponder whether or not your wife is that shallow. If she isn't, maybe you can stop giving dick-size more priority in your mind that it had in hers.
Another point that occurs to me, purely based on my own experiences, is that when I am in love with someone, every part of them becomes 'great' because it is a part of them; the person I love. When I am with a woman that I love, I honestly do not worry about whether or not they are a perfect ten, or how big or small their breasts are, etc. I see them as a whole person, and their bodies as a means to give them physical pleasure via kissing, caressing, and so on. I don't look at their 'assets' as something for me to use for my pleasure, but as something that I can stimulate for their pleasure.
You seem to be hung up on the idea that the gym monkey was somehow superior to you. I understand that many of us guys are wired up competitively, and we tend to presume that women's minds work the same way. The fact is, they don't. What I have been told in real life, and read here, is that the attraction/quality of the sex that occurs in affairs is not that it is better or worse than what occurs in the marriage, but that it is different. Not better, not worse; different.
Then you have to factor in the 'forbidden' nature of affair sex, which is a kick for some people, and also the fact that many women say that what they got out of the ex was either (1) validation and a sense of being an object of desire, or (2) a way to keep their male affair partner interested in providing the emotional ego kibbles that are the real point of the affair from their perspective.
So affair sex is not always great, or even good, and the reasons and motivation for it to happen are different to the reasons it happens as part of a long-term, loving relationship. For many women, it is the stuff that happens around the sex that frames it and gives it a reason.
In your case, you have said that your wife was concerned about her weight, and got validation and pleasure from the fact that the gym monkey pursued her. So that, right there, is why she wound up having the affair, not the size of his equipment, or his technique. Of course, her lack of boundaries was also a factor, but that is not what I am trying to get at here.
You are wondering about questions to ask your wife, many of which are almost designed to hurt yourself, because they are based on your deepest anxieties, and on some kind of comparison between you and the gym monkey. I respectfully suggest that you consider taking another approach, which will be more productive for you, particularly if you want to remain with your wife and get her to frame the affair in a way that will put her off the idea of every repeating the experience.
So instead of focusing on a contest between you and the gym monkey, why not ask these questions instead?
1) Do you think he loved you?
2) Do you think he respected you, as a married woman who gave in to him so easily?
3) What do you think he really thought about you as he had sex with you?
4) Do you think he approaches every insecure middle-aged woman with exactly the same routine, and pounces when he finds easy pickings?
5) How many other married women do you think he has got to betray their husbands and families?
6) Do you feel validated to join that list of his easy conquests?
7) If he is a man who exploits women that he identifies as low-hanging fruit and easy pickings because of their insecurities and need for validation, how does that make you feel about your relationship to him, and what you really represented to him?
8) Do you feel his motivations were based on a true attraction to you, or because it was so easy to get with you?
9) How many other women was he also having sex with during the six weeks of the affair?
10) Given the lives that are being permanently damaged by the actions of that man, are you prepared to make a complaint to the owners of the gym, detailing his approach to you, and his inviting you to his apartment for unprotected sex?
11) If you are not prepared to report his conduct to his employers, what responsibility do you feel for the damage he will do in future to other peoples' marriages and families by repeating his exploitative behaviour with other women?
The reason I suggest that approach is that it seems like the best way to invalidate the affair, and make your wife realise that the gym monkey was a complete and utter exploitative POS who simply used her because she responded to him. That by focusing on these aspects, as hurtful as they may be to your wife (just as the affair has hurt you), you can start blowing away any mystique or excitement relating to the affair and the gym monkey, and turn it into what it really was: a man with no respect for women who found an easy target to prey on, with no regard for the emotional damage he caused.
What your wife has to work on, big time, is why she was so easily persuaded into the affair. You see, that is not about the gym monkey at all, but all about her. He is not some irresistible sex god. He is just a sleazy POS on the make, and most women would spot his type a mile off. So rather than answering questions about his genitals or technique, what your wife should really be focusing on is why she responded so willingly to what was obviously a line of total BS from a stranger. And more to the point, why she wouldn't be susceptible to a few inappropriate comments and advances in future.
You see, the real issue here is not how you measure up or perform in the bedroom. It is about how she measures up and performs as a wife and life-partner. It is not any deficiency on your part that caused this affair, but there is a ton of stuff that she has to work on to prove that she is still worthy of the love and esteem that you have given her for more than twenty years.
So please stop beating yourself up, or worrying about who has a bigger dick. Affairs happen between people, not body parts, and your wife has to figure out and explain why she sacrificed her integrity for a man like that. You have nothing to explain, justify, or feel bad about. The problem is her lack of boundaries and honesty, not the size of your equipment.
And here is a parting thought: if sex with you was somehow 'bad' or unsatisfactory, your wife would not be doing it with you several times a week, would she? She had sex with the gym monkey for validation because of her doubts about herself, not because he was a sex god. Unless your wife is an idiot, she knew exactly what he was; every woman would. So when she has sex with you, it is not just about the physical mechanics of it. It also includes a much deeper dimension, which is about your love for each other, your shared history, and your plans for the future. That is an element where the gym monkey could not compete at all with you, isn't it?
[This message edited by M1965 at 8:52 AM, June 18th (Monday)]