Yeh - any advice is completely wasted on the OP.
What I find odd about some of her most strident supporters on here, is their lack of judgement.
It's as though anyone, no matter what rubbish she writes, gets support from some people because she too has had an affair and/or been an OW.
I get that it must be difficult to be objective if you've been on the receiving end of this sort of thing, although a few seemed to made a good stab at it. There has also been some good advice as far as I can see from a few posters who left marriages for other people/married a bloke after an affair and interestingly, those women haven't supported the OP at all in her decision to keep on lying to everyone, or in her continued and unabating character assassination of her beau's wife (which indicates she's frightened in some way by the wife, obviously).
I'm guessing there are as many women on this thread who've had affairs that didn't turn out how they wanted them to, as there are women who've been left or women whose blokes have had an affair. Which means they've lost any objectivity at all about the merits of this particular poster and her specific actions.
These threads obviously get posts from people who are a lot more objective because they've neither had an affair nor experienced their partner having one. So on another thread, you'll see us giving loads of support to an OW or a woman having an affair (and touchingly you'll even see really kind posts on there from women who've been hurt). Then you'll see us on another thread where a woman whose husband has had an affair, challenging some of the misogyny and the sexist insults being hurled at the OW. In summary, if a poster as an individual is being a bit of an arse, is being disingenuous or is being cruel, there are posters who'll challenge that whether she's an OW, an OM, a man or woman having an affair or alternatively dealing with the fall-out from a partner's infidelity.
But there are some posters who regardless of whether an OW OP's behaviour has been indefensible, or is making a complete tit of herself on the thread, rush in to support her and start turning on other posters. They do it time and time again and the gist of what they say never changes. To the extent that if you see their names as the last poster on an active thread, you can more or less predict what that post is going to say. It used to really confuse me and I still find it odd, but I reckon that there are a lot of unhappy women out there who've resigned to stay in marriages after their affairs didn't work out and they act out some of those frustrations on these threads, starting arguments with posters who criticise dishonesty and maybe living their lives vicariously through these OPs who they hope will achieve a better ending than they had.
Mumsnet's a strange old world, that's for sure.