Yeah, this. ^ People can go on and on as much as they like about how they would be 'absolutely fine' with their husband having a meeting alone (coffee/drinks out/a meal together etc) with a young, attractive female, (or any female actually - even the same age as them.) But I don't believe them.
For instance, I'm in my late 50s - and if my husband was going out and meeting up with a woman from work, or a hobby group - just him and her, whether she was the same age, or younger, I wouldn't be happy with it. And I know for a fact he wouldn't be happy with me going out with a man on my own. The vast majority of people - men AND women would not be happy with this.
I don't care what anybody says, it's not normal or acceptable for a married man to be going out with a woman on his own, or a fairly regular basis. A bunch of women from a hobby group or from work, yeah, but not one woman and him on their own ... It's just weird, and it's unacceptable to do this when you're married.
There are a few exceptions of course, like my (adult) DC, both around 30 y.o. meet friends of the opposite sex occasionally, that they knew from school, and they go to the cinema together, or do a certain hobby together that they enjoy. But they've been mates since they were children, and they knew them WAY before they met their current partner. AND they know their partners well, and they all go out in groups occasionally.
However, if (for example,) a married man has a female friend who he sees on his own socially, and he met her after he met his wife, and she doesn't know his wife, (and has no intention of getting to know her) then that is a red flag. In many cases, they don't know his wife, they don't WANT to, and see her as a hinderance, getting in the way of the 'friendship' with this particular man. It's a bad sign when the married man's female friend has zero interest in getting to know his wife, and has no interest in even talking to her... Very telling, and very suspicious...
And why, WHY is the married man not wanting or letting his wife meet his 'female friend.'
???