All fair points.

The screenshot evidence was a single message my friend sent to me saying "it would be a bad idea for us to get drunk together". It was taken out of context as it excluded the previous part of the convo discussing us being silly drunks. Not that we would sleep together.

We used snapchat as my wife was logging into my Facebook without my knowledge reading our conversations. Nothing was found but I was uncomfortable with this. We then moved to whatsapp as my friends husband was using snap locations to follow her and accuse her of going to see (she has never done this). Then one night he came home in a drunken rage because snapchat locations updates when you open the app, and even though she was at home, he was unhappy she was constantly using it that night thinking she was talking to me.