I haven't read any of the other responses.
I just want to say that my friends' husbands confide in me all the time.
Why? Because I'm safe.
Let's face it.....men don't always understand women. We can be very complex creatures. Even one of my bosses confided in me that his wife was upset because he didn't get her anything HUGE for her birthday. She specifically told him, or it's what he heard her to say, that she didn't want that. He literally said, "I've been married to her for 32 years and I still can't figure her out".
Was he "betraying" her by telling me that? No. And I certainly didn't run to his wife or start any drama.
Sometimes men need a female perspective from someone other than their girlfriends or wives. If a man is being an insensitive jerk, I'll come right out and say so. There are also times when a woman isn't exactly being fair and sometimes a good man needs to know that every single thing he's doing isn't wrong.
My situation might be a little different because I have close relationships with the women involved and I don't want anyone to get hurt. When I love two people as a couple, I don't want to lose either one of them.
I don't think you should freak out if your man wants another perspective from time to time. I've been divorced for many years and frankly, I've learned a lot about men through my friendships with them. Am I interested in them romantically? Absolutely not. But, they are human beings, with feelings, and if I am a sounding board when they feel fed up or confused, so be it.
I had one friend who cried to me about his relationships with women. Literally cried. When things were tough, he leaned on me. When he had a girlfriend, he acted like he never even knew me. I babysat his kid, I took her everywhere with my kids. But, it's like there was a no contact order in effect when he was in a relationship. When they broke up....he called me crying.
I'm not going to lie....I got a little tired of that. There was nothing romantic between us, but he brought more drama into my life than women I know. I didn't need it.
My point is.....I don't think that your man talking to another woman is necessarily a deal breaker. It appears he has little opportunity to cheat and it doesn't appear that he wants to.
Which one of us hasn't said, "I swear....if he doesn't remember to take out the garbage, I'll take HIM to the curb!" (?)
Does that mean a break up or divorce?
If you said it to one of his male friends would it make a difference?
I find that the happiest relationships don't feel threatened by communication with the opposite sex because they don't feel threatened in the first place.
Jealousy equals insecurity. If my friends freaked out because their men confided in me, which they are well aware of, it would be like dominos tumbling down for no reason.
It's not even that they trust me, they trust their man or they don't.
If they don't trust him, it has nothing to do with me.
Talking to someone of the opposite sex is not betrayal, in my opinion. If this person is a good woman and friend, she could actually be an ally as opposed to being a foe.
You need to center yourself because it seems that you could feel threatened about almost anything.
Please remember that strength and confidence are absolutely the most attractive things about a woman.
Best wishes.