I'm not a longterm member here Ahkuei but in my sitch my W sent me a screenshot of her messages with OM telling him it's over but wouldn't share her phone with me and quickly dismissed me asking saying "I've deleted it anyway". I'm sure she has still contacted him since. Don't fall for it, don't believe it. I think it often takes several attempts to remove the affair partner. What I feel I've slipped up on though was being quite demanding about her ending things as I think it led to W lying further and taking it underground.