<human>: I was with my wife for 10 years. We've had our ups and downs like any couple, but, as far as I'm aware we've always been faithful to each other.

Fast forward to a month ago. She'd been acting odd for a week, really emotional and distant and not herself. A couple of nights before my birthday Me and her and a couple of friends watched the boxing. She went to bed early, my friends left and I went to bed in the early hours of the morning. I've never checked her phone before, never felt the need. But noticed it on the side with a lot of unread messages on it. Something inside told me to look and see if I could find out if she'd been telling her best friend why she was acting the way she was. Turns out, she'd been talking to a guy online for the past few weeks and was "pining" for him. I was devastated. I woke up her and held the phone out to her with the messages on.

I then found out that they had been sexting (sending nude pictures and masturbating together whilst texting) and were planning on meeting up behind my back. She had also lied a lot during that week. I asked her about 4-5 times if there was anyone else, not something I've ever asked before but I had a 'feeling' that i should be asking that question. She repeatedly said she was only interested in me and no one else. 

She claims that what she didn't wasn't cheating because it wasn't physical. But I'd say she cheated on me emotionally/mentally. She also claims what she did wasn't sexting. Can anyone here give clarity, is this cheating? If not, then what else is it?

Give me a shortened version of the text
<bot>: Found out wife of 10 years had been sexting/arranging to meet up with another man. She claims it's not cheating because it wasn't physical. I say it is cheating emotionally.