Wow she is so similar to my W, the reason she is telling you where you should take your date out on one is so she can feel less guilty once and if do ever have another partner. She wants to feel at peace for what she is doing, she knows its wrong but wants to blame it on you and feel like she made the right choice. Their logic is completely twisted.
My W also insinuated that she is texting OM, she said her messages were not going through and I told her well you're not texting me and the kids are at school so you must have someone else ur texting, she simply replied "sure" I didn't go any further, what for, she got caught. Either way, yes it bothers us but really what can we do, NOTHING!
Move forward with our lives, when if they ever do want to come back it will be OUR choice then.