20 year marriage

I've been with my wife now for 20 years. She has been traveling for 15 of them, at least 2 to 3 times a month. I have always felt like she was up to something extramarital. She has always replied with I'm not cheating, it's all in your head, you're crazy....etc. This has been going on throughout the last 4 to 5 years. Up until recently I couldn't prove anything I was feeling to be true. I found some text messages between her and her boss on our IPad. They were pretty clear but could have possibly been read another way. When confronting her with them she replied they were joking....
I knew that wasn't the truth in my gut at the time.

I overheard some conversations between her and her boss that had nothing to do with work. They were more like something that you would say to som9ne you were dating. I started paying more attention after that, very close attention to everything. I finally got her to admit that there was something going on between them. She swears to my face that she has ended all communications with him. I have heard her still talking to him and making plans along with other crap. I am having a real hard time believing anything that she says now because i have heard thI mean I don't believe a word that she says at all now.

We've started couples counseling and she is using the counselor to .ake what she did somehow mu fault. I know that sometimes well more than sometimes I can be a price. But I never cheated on her. Not for lack of offers but because of the vows we took.

I still love her but I don't think that a will ever be able to trust her again. Has anyone else going through this type of situation before? If so any advise would be helpful. Thanks,