Posting for some perspective as I'm not sure if I'm over reacting.
Sorry if it is long...trying not to leave out anything relevant.
Been with DH over a decade, no kids (though we have been TTC for some time), both mid-thirties.
I have never had any reason to doubt our relationship, no major dramas, he is on the whole a lovely, caring man.
I was doing a food plan before going shopping and popped on DH's phone to check his messages re his hobby to confirm which nights he'd be out. I then remembered that he'd mentioned meeting up with an old work colleague but I couldn't remember the date, so checked his messages from that conversation too.
He was in the shower at the time but we pop on each others phones when needed so this wasn't a case of snooping.
It turned out date hadn't been set yet but the last message in the thread sounded a bit flirty and had heart emojis (unusual for him) so I decided to scroll back and have a look at the conversation.
I can't remember them all but the two that stand out are one from several months ago where he said he "had to be careful because if he wasn't....then he'd be very tempted by her" (I presume he is referring to being married), and then in relation to the more recent suggestion of meeting up for a coffee in her town (about 30 mins away by car and not somewhere he is familiar with) that she'd need to suggest where to meet "a coffee shop, a bar, a hotel...."
There was also a lot of innuendo filled banter. She also said she was so glad he was in her life.
I felt physically sick when I read the messages and can't stop thinking about them. I plan to re-read the messages when I'm home tonight, as to be honest I was in shock and didn't take it all in.
It feels to me like at the very least a crush that he isn't trying to distance himself from, and at worst an emotional affair that may lead to a physical affair, but I'm not sure if I'm over reacting?
Do I tell him I've seen the messages? Or wait until they meet up and see what happens?
Assuming I talk to him and he accepts this was inappropriate, how can we ever regain the trust that has been lost?