The blame for the woman having this affair lies squarely on her shoulders...She is the one who chose to do what she has done, behind her husband's back destroying 27 years of marriage. Sure, there was another guy involved but he wasn't in the marriage, she was, and she chose to compromise it.
Sleeping with a life-partner, whilst carrying on an affair with someone else, living another life in fact, is a pretty low thing to do...Weak too. It's an easy option to fill a void within I suppose though, and easier than telling a partner that you want to leave the before the affair happens.
Knowing these two as I do it's going to be interesting to see how it plays out.
Thanks for commenting so personally BB. Have a great day too.