I have been married for 27 years. About 7 weeks ago my wife asked for a separation and divorce.About two weeks ago my wife started buying lingerie she never bought it and would never wear it for me. This morning she left her phone open and I checked her phone and she had been messaging a guy who is also the fysio for both of us he said to her i will give you my keys and he lives around the corner form my house. Then I saw a message from her best friend saying go and have fun and just take your clothes off.

I can not believe it has been only 7 weeks and she is sleeping with someone else. It is like the last 27 years meant nothing. I am now an emotional wreck and my anxiety is going through the roof. I don't know what to do or how to process this any advice would be welcome.

Also this for more context

I had an appointment last Thursday with the fysio and he said to me your wife told me you are getting divorced and then said it is hard and you must be strong.