Hello all.
Posted here for traffic.
Long time lurker.
Married for 12 years to H with 2 girls.
Went on his phone last night to check banking and found messages between him and a mutual friend.
Backstory
She is 17 years younger than us and has been a friend for over a decade. She is married and all are part of a larger friend group.
These messages seem to have been going on for over 2 years.
Lots of "xxx" on messages. Flirting, sex talk, photos (underwear etc from both) and everyday talk as well as more intimate deeper conversations. Even going as far as to say that he thinks they are more than friends and that they are each others person.
Every day and multiple times a day. Always starts with good morning and ends with night night.
He says it's friend talk and I'm overreacting and I think it's inappropriate and want him to block her.