Stay out of it or tell ?

[maybetomorrow4]

Im moving area so leaving my job next month,so this will no longer affect me.
The thing is a work colleague, confessed to me she had been sleeping with the manager for the past 18 months. She is married with two dc and so is the manager. I know this is totally not my concern but i feel bad for the other staff that still work there as this girl gets preferential treatment all the time....and clearly now i know why. For example she is always late , off work or given minimal duties etc where as the manager is very hard on the other staff ,including me and has reduced us all to tears on so many occasions. I have not told anyone about this affair , but I am unsure what to do.Thanks in advance.

Do nothing, will never end well.

Don’t tell about the affair but make a formal complaint about the manager as it’s his behaviour causing the problem, not the affair

What’s a month in 18 months. Let the boss know about his terrible behavior when you leave.

I think I'd let it go. Not really your business, even though your working life has been made worse because of it. Just leave with your head up and move on. I have worked for organisations who do some sort of post leaving interview/questionnaire as a way of trying to sort out management issues and generally improve things for others in the future (it worked quite well), so if your organisation has anything similar, then comment on the manager's behaviour at work if you must, but leave the personal stuff out of it.

Thank you that is good advice MrsExpo